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CBSE Questions for Class 12 Medical Biology Biodiversity And Its Conservation Quiz 5 - MCQExams.com
CBSE
Class 12 Medical Biology
Biodiversity And Its Conservation
Quiz 5
Idri idri
is found in
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Australia
0%
Madgascar
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Mauritius
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Tasmania
Explanation
Idri idri
is also called as lemur, which are a clade of strepsirrhine primates endemic to the island of Madagascar. The word "lemur" derives from the word lemures (ghosts or spirits) from Roman mythology and was first used to describe a slender loris due to its nocturnal habits and slow pace, but was later applied to the primates on Madagascar.
Although lemurs often are confused with ancestral primates, the anthropoid primates (monkeys, apes, and humans) did not evolve from them; instead, lemurs merely share morphological and behavioral traits with basal primates. Lemurs arrived in Madagascar around 62 to 65 mya by rafting on mats of vegetation at a time, when ocean currents favored oceanic dispersal to the island.
The first biosphere reserve established in India for conserving the gene pool of flora and fauna and the life style of tribals is
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Nilgiri biosphere reserve
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Nanda Devi biosphere reserve
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Utarakhand biosphere reserve
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Great Nicobar biosphere reserve
Explanation
The 'Nilgiri Biosphere Reserve' was the first biosphere reserve in India established in the year 1986. It is located in the Western Ghats and includes 2 of the 10 biogeographical provinces of India.
A wide range of ecosystems and species diversity are found in this region. Thus, it was a natural choice for the premier biosphere reserve of the country.
It was established mainly to fulfill the following objectives:
To conserve insitu genetic diversity of species.
To restore degraded ecosystems to their natural conditions.
To provide baseline data for ecological and environmental research and education.
To function as an alternate model for sustainable development.
Bandipur National Park is associated with
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Elephants
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Tiger
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Rhinoceros
0%
Deer
Explanation
'Bandipur National Park', established in 1974 as a tiger reserve under 'Project Tiger', is a national park located in the south Indian state of Karnataka. It was once a private hunting reserve for the Maharaja of the Kingdom of Mysore. Bandipur is known for its wildlife and has many types of biomes, but dry deciduous forest is dominant. The 'Bandipur Tiger Reserve' was established under 'Project Tiger' in 1973 by adding nearly 800 square km (310 sq mi) to the 'Venugopala Wildlife park'. Bandipur supports a good population of endangered and vulnerable species like Indian elephants, gaurs, tigers, sloth bears, muggers, Indian rock pythons, four-horned antelopes and dholes.
Which of the following ape is found in India?
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Chimpanzee
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Gibbon
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Orangutan
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Lemur
Explanation
Gibbons are apes in the family Hylobatidae. The family historically contained one genus, but now is split into four genera. Gibbons occur in tropical and subtropical rainforests from eastern Bangladesh and northeast India to southern China and Indonesia (including the islands of Sumatra, Borneo, and Java). The Hoolock gibbons, are two primate species of genus Hoolock in the gibbon family, Hylobatidae, native to eastern Bangladesh, Northeast India and Southwest China. In northeast India, the hoolock is found south of Brahmaputra and east of the Dibang Rivers. Its range extends into seven states covering Arunachal Pradesh, Assam, Manipur, Meghalaya, Mizoram, Nagaland, and Tripura.
Which of the following is considered poor man's timber?
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Mango wood
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Bamboo
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Acacia wood
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Ecalyptus wood
Explanation
Bamboo is commonly called as the poor man's timber because it is used in all aspects of life. Bamboo is also an icon of versatility. It forms part of the paper we use every day and of the houses we build. By virtue of its unique properties like quick growth, tensile strength, availability and renewability, it has the epithet of 'poor man's timber'.
Rajaji National Park is situated in
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Tamil Nadu
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Karanataka
0%
Uttranchal
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U.P.
Explanation
'Rajaji National Park' is an Indian national park, that encompasses the Shivaliks, near the foothills of the Himalayas. It is spread over 820 km., in Uttaranchal. In 1983, three wildlife sanctuaries in the area namely, Chilla, Motichur and Rajaji sanctuaries were merged into one.
Rajaji National Park has been named after C. Rajagopalachari (Rajaji), a prominent leader of the freedom struggle, the second and last Governor-General of independent India and one of the first recipients of India's highest civilian award Bharat Ratna (in 1954).
Rajaji National Park is predominantly formed from dense green jungles, and this environment forms a habitat for a number of animals. The Park is at the northwestern limit of distribution for both elephants and tigers in India, and has the largest population of elephants in Uttarakhand.
Hot spots are
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Richest area of species diversity
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Area of volcanic eruption
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Sosmic areas
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Submerged volcanoes
Explanation
Biodiversity hotspots are geographic areas that contain high levels of species diversity but are threatened with extinction. To qualify as a hotspot, a region must meet two strict criteria: It must contain at least 1,500 species of vascular plants (> 0.5 percent of the worlds total) as endemics. It has to have lost at least 70 percent of its original habitat. Three factors that usually determine hotspots:
The number of total species (species richness).
The number of unique species (endemism).
The number of species at risk (threat of extinction).
Which of the following is wrongly matched?
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Temperate zone - 20-40$$^o$$ latitude
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Hypolimnion - thermal stratification in lakes
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Ozone layer - stratosphere
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Profundal zone - dark zone
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Ectotherms - cold blooded animals
Explanation
From $$23.5^0$$N to $$66.5^0$$N and between $$23.5^0$$S and $$66.5^0$$S are the temperate zones, where there are clear spring/summer/fall/winter seasons. The north temperate zone extends from the tropic of cancer to the arctic circle. The south temperate zone extends from the tropic of capricorn to the antarctic circle. Between $$23.5^0$$S and $$23.5^0$$N latitude we have the tropics - where high temperatures are the norm, and the sun can beat down from directly overhead once or twice each year.
Wild Life of nature is renamed as
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World Wild Life conservation of nature
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World Wild Life of nature
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World Wild Fauna
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World Wild Life Fund
Explanation
The wildlife is a valuable resource of our country which needs to be protected from the threats imposed by human activities. Several regulatory bodies have laid certain formulations to protect them. The 'World Wide Fund for Nature' (WWF) deals with the issues regarding the conservation, research, and restoration of the environment. It
is an international non-governmental organization founded on April 29, 1961, and is
It was formerly named the 'World Wildlife Fund', which remains its official name in Canada and the United States.
It is the world's largest conservation organization with over 5 million supporters worldwide, working in more than 100 countries, supporting around 1,300 conservation and environmental projects.
Which one of the following is not included under in-situ conservation?
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National park
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Sanctuary
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Botanical garden
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Biosphere reserve
Explanation
In-situ conservation is the method of conservation of organisms in their natural habitat. National park, sanctuary and biosphere reserve are the methods of in-situ conservation. Botanical garden is an area where cultivation of wide variety of plants is done for the purpose of research and education.
Thus, the correct answer is option C.
Valuable plant materials likely to become irretrievably lost in the wild or cultivation are kept preserved in viable conditions in
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Gene library
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Gene pools
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Gene banks
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Bio-reserves
Explanation
Gene banks are a type of biorepository, which preserve genetic material. For plants, this could be by freezing cuttings from the plant, or stocking the seeds (e.g., in a seed bank). For animals, this is the freezing of sperm and eggs in zoological freezers until further need. With corals, fragments are taken which are stored in water tanks under controlled conditions.
Plant genetic material in a 'gene bank' is preserved at $$-196^0$$C in liquid nitrogen as mature seed (dry).
Genetic diversity is essential for
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Maintenance of species
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Prevent extinction of species
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Improvement of genetic code
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Maintenance and improvement of species
Explanation
The wide variety of genes in a species is known as its genetic diversity. Genetic diversity helps the organisms to adapt themselves to the changing environmental conditions due to the variations in the alleles of the individuals of the species. The individuals with the alleles more fit to survive in an environment will grow and reproduce thus maintaining themselves and will also lead to continuous survival of species generation after generation.
Greatest genetic diversity is found in areas where
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Plants grow wild
0%
Crops are cultivated
0%
Species originated
0%
Production is the highest
Explanation
Genetic diversity refers to the variety of genes within a species. Each species is made up of individuals that have their own particular genetic composition. Within a species there may also be discrete populations with distinctive genes. Speciation is the evolutionary process by which new biological species arise. The biologist Orator F. Cook was the first to coin the term 'speciation' for the splitting of lineages or "cladogenesis," as opposed to "anagenesis" or "phyletic evolution" occurring within lineages.
More diversity will be introduced to gene pool when speciation occurs; as a result of which more and more species will be produced.
The diversity of species in the environment sharing same community is called
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Alpha diversity
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Beta diversity
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Gamma diversity
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Biosphere
Explanation
Alpha diversity refers to the diversity at a local site. Alpha diversity is the richness and evenness of individuals within a habitat unit.
Beta diversity is the diversity among species at different sites.
Gamma diversity is the diversity of the entire landscape.
Biosphere refers to the region of the earth where life exists.
Thus, the correct answer is option A.
Plant genes of endangered species are stored in
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Gene library
0%
Gene bank
0%
Herbarium
0%
None of the above
Explanation
Gene banks are a type of biorepository, which preserve genetic material. For plants, this could be by freezing, cuttings from the plant, or stocking the seeds (e.g., in a seedbank).
For animals, this is the freezing of sperm and eggs in zoological freezers until further need.
With corals, fragments are taken, which are stored in water tanks under controlled conditions. Plant genetic material in a 'gene bank' is preserved at $$-196^0C$$ in liquid nitrogen as mature seed (dry).
In plants, it is possible to unfreeze the material and propagate it, however, in animals, a living female is required for artificial insemination. While it is often difficult to utilize frozen animal sperm and eggs, there are many examples of it being done successfully.
The conservation of local (endemic) varieties of crops is must because
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These are source of genes for genetic diversity.
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These are high yielding and nutritious.
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We want to conserve all plants and animals of the past for our knowledge.
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All of the above.
Explanation
Genetic diversity refers to the variety of genes within a species. Each species is made up of individuals that have their own particular genetic composition. Within a species there may also be discrete populations with distinctive genes. Sexual reproduction is critical for maintaining genetic diversity within a species, because it combines the parents genetic material, resulting in offspring with unique genetic blue prints different from either parent.
The conservation of local varieties are important, as they provide genes for genetic diversity.
Genetic diversity will be more common in organisms with
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Parthenogenesis
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Sexual reproduction
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Asexual reproduction
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Parthenocarpy
Explanation
Genetic diversity refers to the variety of genes within a species. Each species is made up of individuals, that have their own particular genetic composition.
Within a species, there may also be discrete populations with distinctive genes.
Asexual reproduction results in no new gene configurations, so the offspring is genetically identical to the parent.
Sexual reproduction results in offspring, that receives genes from two parents.
The advantage of sexual reproduction occurs when the two parents come from different populations.
This way the genetic information is the combination of two parents from two separate populations.
So, the correct answer is option B.
When is the 'World Wild Life Week' observed?
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First week of September
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Last week of September
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Third week of October
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Last week of October
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First week of October
Explanation
In order to arouse a general awakening in the common man in favour of protection of wildlife, the 'Indian Board of Wild Life' (IBWL) decided to observe the 'Wildlife Week' and since then from October 2 - 8 every year organize different activities related to wildlife conservattion to commemorate this week.
Every year around this time (October 2 to 8) governments, environmentalists, activists, educators organize different activities to accelerate the awareness of wildlife conservation among people.
India, being a mega-storehouse of various species, is also able to manage several conferences, awareness programmes, and public meetings among the nature lovers. Schools and educational institutions organize events such as wildlife related movie screening, painting competition/essay writing/ debate competition for young children with wild life as the theme.
The country which hosted the first World Earth Summit on conservation of environment is
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India
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Brazil
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Peru
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Spain
Explanation
From 3 - 14 June 1992, Rio de Janeiro in Brazil hosted the 'United Nations Conference on Environment and Development' (UNCED). The focus of this conference was the state of the global environment and the relationship between economics, science and the environment in a political context. The conference concluded with the 'Earth Summit', at which leaders of 105 nations gathered to demonstrate their commitment to sustainable development.
The loss of the sum total and variety of all the genes and their alleles present in a population or species is called as
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Genetic conservation
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Genetic erosion
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Species extinction
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Gene pooling
Explanation
Genetic erosion is a process whereby an already limited gene pool of an endangered species of plant or animal diminishes even more, when individuals from the surviving population die off without getting a chance to meet and breed with others in their endangered low population.
The term is sometimes used in a narrow sense, such as when describing the loss of particular alleles or genes, as well as being used more broadly, as when referring to the loss of varieties or even whole species.
Genetic erosion occurs because each individual organism has many unique genes, which get lost when it dies without getting a chance to breed.
India became a party to 'Convention on Biological diversity' in the year
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1994
0%
1993
0%
1992
0%
1998
Explanation
The 'Convention on Biological Diversity' (CBD), known informally as the 'Biodiversity Convention', is a multilateral treaty. The convention has three main goals: conservation of biological diversity (or biodiversity); sustainable use of its components; and fair and equitable sharing of benefits arising from genetic resources. The convention was opened for signature at the 'Earth Summit' in Rio de Janeiro on 5 June 1992 and entered into force on 29 th December 1993.
The Siberian crane from Russia is a regular visitor to the bird sanctuary in which one of the following place in India?
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Lallbagh, Bangalore
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Vendanthgol sanctuary, Tamil Nadu
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Ranganathittis sanctuary, Karnataka
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Bharatpur sanctuary, Rajasthan
Explanation
$$\textbf{Correct option:}$$ $$\textbf{(D)}$$
$$\textbf{Solution:}$$
$$\bullet$$ There is also a reserve that protects faunal species.
$$\bullet$$
This sanctuary is home to sambar, chital, nilgai, and boar, as well as indigenous and migratory waterbirds and waterside birds.
$$\bullet$$
The countless migrating birds that arrive from as far as Siberia and Central Asia to spend the winter in Bharatpur before returning to their breeding sites are the park's main attractions for visitors.
$$\bullet$$
Cranes, pelicans, geese, ducks, pipits, and other migratory birds can all be found at the Bharatpur bird sanctuary.
$$\textbf{Thus Correct option is (D)}$$
Which one of the following is an example ex-situ conservation?
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National park
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Wildlife sanctuary
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Seed bank
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Sacred groves
Explanation
A seed bank (also seedbank or seeds bank) stores seeds as a source for planting in case seed reserves elsewhere are destroyed. It is a type of gene bank. The seeds stored may be food crops, or those of rare species to protect biodiversity. The reasons for storing seeds may be varied. In the case of food crops, many useful plants, that were developed over centuries are now no longer used for commercial agricultural production and are becoming rare. Storing seeds also guards against catastrophic events like natural disasters, outbreaks of disease, or war.
Unlike seed libraries or seed swaps, that encourage frequent reuse and sharing of seeds, seed banks are not typically open to the public. This is an example of ex-situ conservation.
Ex situ conservation is the conservation and maintenance of samples of living organisms outside their natural habitat, in the form of whole plants, seed, pollen, vegetative propagules, tissue or cell cultures.
An example for in situ biological conservation method is to establish
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Botanical gardens
0%
Seed banks
0%
Biosphere reserves
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Zoos
Explanation
In situ conservation is on-site conservation or the conservation of organisms in natural habitats.
A biosphere reserve is an area proposed by its residents, ratified by a national committee, and designated by 'UNESCO's Man and Biosphere (MAB) program', which demonstrates innovative approaches to living and working in harmony with nature.
A biosphere reserve is the large protected area to conserve wildlife and culture of tribals. The zoo is the man-made area to protect the wild animal. The seed bank is the conservation of wild seeds in the artificial area.
'Biosphere reserve' is an example of
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In vivo conservation
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Ex situ conservation
0%
In situ conservation
0%
All of the above
Explanation
A biosphere reserve is an ecosystem with plants and animals of unusual scientific and natural interest. It is a title given by UNESCO to help protect the sites. The plan is to promote management, research and education in ecosystem conservation. This includes the 'sustainable use of natural resources'.
In situ conservation is on-site conservation or the conservation of genetic resources in natural populations of plant or animal species, such as forest genetic resources in natural populations of tree species.
MAB stands for
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Man, antigens, biology
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Man and biosphere programme
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Man and biology
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Man and biotic community
Explanation
UNESCO's 'Man and the Biosphere Programme' (MAB) is an intergovernmental scientific programme, that aims to establish a scientific basis for the improvement of relationships between people and their environments.
MAB combines the natural and social sciences, economics and education to improve human livelihoods and the equitable sharing of benefits, and to safeguard natural and managed ecosystems.
Germplasm is
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Obsolete and improved genetic material
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Genetic material of related wild type
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Both a and b
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Improved genetic material
Explanation
Germplasm is a term used to describe living genetic resources, such as seeds or tissue, maintained for the purpose of breeding, preservation, and other research uses. These resources may take the form of seed collections stored in seed banks, trees growing in nurseries, animal breeding lines maintained in animal breeding programs or gene banks, etc. Germplasm collections can range from collections of wild species to elite, domesticated breeding lines that have undergone extensive human selection.
What is a keystone species?
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A species which makes up only a small proportion of the total biomass of a community, yet has a huge impact on the community's organization and survival.
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A common species that has plenty of biomass, yet has a fairly low impact on the community's organization.
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A rare species that has minimal impact on the biomass and on other species in the community.
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A dominant species that constitutes a large proportion of the biomass and which affects many other species.
Explanation
A keystone species is often a dominant predator whose removal allows a prey population to explode and often decreases overall diversity. Other kinds of keystone species are those, such as coral or beavers, that significantly alter the habitat around them and thus affect large numbers of other organisms.
Kiwi is found in
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India
0%
West Indies
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New Zealand
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South Africa
Explanation
Kiwis are flightless birds native to New Zealand, in the genus
Apteryx
and family Apterygidae.
They belong to an ancient group of birds that can't fly the ratites. They are nocturnal.
It is national icon of New Zealand and it has loose hair like feathers, strong legs and no tail. Hence, option C is correct.
Ghana Sanctuary is found in
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Bihar
0%
Rajasthan
0%
Madhya pradesh
0%
Karnatka
Explanation
The 'Keoladeo Ghana
National Park' formerly known as the 'Bharatpur Bird
Sanctuary' in Bharatpur of Rajasthan. It is a famous bird sanctuary, that plays host to thousands of birds especially during the winter season.
Over 230 species of birds are known to have made the national park as
their home. It is a man-made and man-managed wetland and one of the national parks of India. The 29 $$km^2$$
reserve is locally known as Ghana, and is a mosaic of dry grasslands, woodlands, woodland swamps, and wetlands.
Which one of the following shows maximum genetic diversity in lndia?
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Mango
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Groundnut
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Rice
0%
Maize
Explanation
Rice accounts for about 42% of total food grain production and >55% of the
diet
in India. It
is considered to have originated in the Himalayan
foot
hills. It is cultivated below the sea level in the Kuttanad district of Kerala state as well as at an
altitude
of 2000 meters above the mean sea level in the hills of Jammu and Kashmir, Uttaranchal and North-Eastern States.
Rice diversity consists of landraces, improved cultivars, hybrids, closely related wild relatives adapted to varied agro-ecological conditions, such as altitude, temperature, rainfall, soil type etc. and possessing varied agro-morpho-physiological characteristics.
So, the correct answer is option C.
The species used as natural genetic engineer is
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Agrobacterium tumefaciens
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Bacillus thuringiensis
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Aspergillus
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Drosophila
Explanation
Agrobacterium tumefaciens
will transfer genes (T-DNA region of Ti plasmid) into the plant that produces its food or nutrient called opines (opines are not needed for plants). Apart from that, it also integrates genes for cell division and proliferation leading to crown gall disease, so that more number of cells result in more production of opines. Because of this reason it is called as a 'natural genetic engineer'.
The best way to conserve our water resources is
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Rain water harvesting
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Sustainable water utilization
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Encouragement of natural regeneration of vegetation
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All of the above
Explanation
Human activities like deforestation, pollution, global warming etc is a major threat to the natural resources.The scarcity of water is a common problem nowadays which needs serious attempts.Rainwater harvesting
is the method of conservation of rainwater by reusing the stored water for several domestic purposes.
The
rainwater
is collected from various hard surfaces such as rooftops and or other man-made above ground hard surfaces.
Sustainable water utilization is the vision of the management of natural resources like water and its proper utilization.
Encouragement of natural regeneration of vegetation is also one of the methods to conserve water resource. It will usually encourage species, that are already plentiful in the area and will ensure the vegetation is directly suited to the site. As all of the above are ways to conserve our water resources.
So, the correct answer is option D.
Which animal recently extinct from India?
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Cygnus
0%
Mammoth
0%
Cheetah
0%
Dinosour
Explanation
Cheetah are disappearing from most of its range and have become extinct in Asia including India due to its conflict with livestock farming, despite the fact that cheetah causes comparatively minor damage. Hence, option C is correct.
The species of plants that play a vital role in controlling the relative abundance of other species in a community are called as
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Edge species
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Link species
0%
Keystone species
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Pioneer species
0%
Successional species
Explanation
A keystone species is a plant or animal that plays a unique and crucial role in the way an ecosystem functions. Without keystone species, the ecosystem would be dramatically different or cease to exist altogether. All species in an ecosystem, or habitat, rely on each other. A keystone species' disappearance would start a domino effect. Other species in the habitat would also disappear and become extinct. The keystone species' disappearance could affect other species that rely on it for survival. For example, the population of deer or rabbits would explode without the presence of a predator. The ecosystem cannot support an unlimited number of animals, and the deer soon compete with each other for food and water resources. Their population usually declines without a predator such as a mountain lion. Without the keystone species, new plants or animals could also come into the habitat and push out the native species.
Select the correct statement about biodiversity.
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The desert areas of Rajasthan and Gujarat have a very high level of desert animal species as well as numerous rare animals.
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Large scale planting of BT cotton has no adverse effect on biodiversity.
0%
Western Ghats have a very high degree of species richness and endemism.
0%
Conservation of biodiversity in just a fad, pursued by the developed countries.
Explanation
A)Correct option-C
B) Explanation for correct option-
1. The Western Ghats are the world's biodiversity hotspots.
2. Their positioning makes the Western Ghats biologically rich and biogeographically unique from other regions.
3. It has the veritable treasure house of biodiversity.
4. Mains centre are
Kanyakumari Wildlife Sanctuary, Tamil Nadu.
Bandipur National Park, Karnataka.
Nagarhole National Park, Karnataka.
Nilgiri Biosphere Reserve, Tamil Nadu.
5. These ghats have a significant source of moisture for the monsoon.
6. There is a high degree of species richness and endemism of flowering, non-flowering plants, reptiles, insects, birds, mammals, butterflies. etc in the Western Ghats.
The term alpha diversity refers to
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Genetic diversity
0%
Community and ecosystem diversity
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Species diversity
0%
All of the above
Explanation
Whittaker's idea was that the total species diversity in a landscape is the gamma diversity and is determined by two different things, the mean species diversity in sites or habitats at a more local scale is an alpha diversity and the differentiation among those habitats is the beta diversity.
Alpha diversity was defined by Whittaker (1972) as the species richness of a place. However, the practical development of this concept led to redefining the alpha diversity on the basis of the structure of the community.
Thus, the correct answer is option B.
"Kazi Ranga" is related to
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Tiger
0%
Rhinoceros
0%
Birds
0%
Lion
Explanation
'Kaziranga National Park' is a national park in the Golaghat and Nagaon districts of the state of Assam, India. It is a world heritage site. The park hosts two-thirds of the world's great one-horned rhinoceroses.
Which one of the following is not included under in-situ conservation?
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Biosphere reserve
0%
National park
0%
Sanctuary
0%
Botanical garden
Explanation
In-situ conservation
is on-site
conservation
or the
conservation
of genetic resources in natural populations of plant or animal species.
It is the process of protecting an endangered plant or animal species in its natural habitat,
either by protecting or cleaning up the habitat itself, or by defending the species from preadtors
.
Around 4% of the total geographical area of the country is used for in-situ conservation. The following methods are presently used for in-situ conservation is biosphere reserves, national parks and wild life sanctuaries. Botanical gardens are included under Ex-situ conservation.
One of the most important functions of botanical gardens is that
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They provide a beautiful area for recreation.
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One can observe tropical plants there.
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They allow ex-situ conservation of germplasm.
0%
They provide the natural habitat for wildlife.
Explanation
Ex-situ conservation is the technique of conservation of all levels of biological diversity outside their natural habitats through different techniques like zoo, captive breeding, aquarium, botanical garden, and gene bank. It plays key roles in communicating the issues, raising awareness, and gaining widespread public and political support for conservation actions and for breeding endangered species in captivity for reintroduction.
A botanic garden is an institution holding documented collections of living plants for the purposes of scientific research, conservation, display and education. A botanic garden has been defined as a garden containing scientifically ordered and maintained collections of plants, usually documented and labeled, and open to the public for the purposes of recreation, education and research.
Species diversity in an ecosystem mainly depends on
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Light intensity
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Less temperature
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Rain fall
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Soil type
Explanation
Species diversity
is a measure of the
diversity
within an ecological community that incorporates both
species
richness (the number of
species
in a community) and the evenness of
species
abundances and it varies
from region to region and
mainly depends on rainfall apart from other factors like temperature, light intensity etc.
Therefore, the correct answer is option C.
Greatest genetic diversity of crop plant is found in
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Central America
0%
Homelands
0%
South America
0%
India
Explanation
Diversity in crops is showcased as genetic and phenotypic characters. These include variety of the size of seeds, branching pattern, height differences, flower color, fruiting time and flavor.
Genetic diversity is the total number of genetic characteristics that make up the species and play a major role in modern plant breeding and the greatest diversity in crop plants is seen in the homelands.
Which of the following animal has become extinct in India?
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Lion
0%
Acinonyx
0%
Panthera tigris
0%
None of the above
Explanation
Cheetah (
Acinonyx
) is world's fastest land animal. It is a critically endangered species, surviving today only in Iran. It is extinct from India now. Hence, option B is correct.
The largest endangered bird in India is
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Vulture
0%
Flamingo
0%
Great Indian Bustard
0%
None of the above
Explanation
The Great Indian
Bustard is a
most endangered
species of
bird
found only in
India
and adjoining region. Bustard is one of
the largest flying species of bird with weight up to 15 kg and about 1 m tall from the ground.
Due to heavily hunting and
habitat
loss, the bird is disappearing from the many regions of India. It is the state bird of Rajasthan.
These days in India, lion is found in
Report Question
0%
The forests of Madhya pradesh
0%
Gir forests of Gujarat
0%
Gim corbet national park
0%
Nilgiri forests
Explanation
Lions once roamed Africa, Asia and Europe. However, now they are found in only two areas of the world and are classified into two subspecies. Asiatic lions also known as Indian lion, live in India's Gir forest; African lions live in central and southern Africa. Hence, option B is correct.
What shall be the effect of destruction of wildlife?
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0%
Wild gene of disease resistance will not be obtained
0%
Soil erosion
0%
Floods and saline lake
0%
Greenhouse effect
Explanation
Destruction of wildlife will cause a drastic effect in an ecosystem. One of them will be w
ild gene of disease resistance will not be obtained as the gene pool of the particular area will be disturbed. There will no major effect in soil erosion, floods or greenhouse effect which is caused by other factors like deforestation and greenhouse gases respectively.
Therefore, the correct answer is option A.
Animal protected in Kaziranga National park is
Report Question
0%
Tiger
0%
Lion
0%
Elephant
0%
Rhinoceros
Explanation
Kaziranga National Park is a national park in the Golaghat and Nagaon districts of the state of Assam, India. It is a world heritage site, the park has two-thirds of the world's one-horned rhinoceroses.
Therefore, the correct answer is option D.
What are the control methods that are to be adopted to restore balance in the ecosystems?
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0%
Rain water harvesting for conservation and management of water.
0%
Conservation of ocean resources and preservation of marine life.
0%
Public awareness programmes concerning conservation of wildlife.
0%
All of the above.
Explanation
We know that the level of the ground is decreasing day by day due to its excessive use. As a result, the world is facing serious water issues. Apart from this, oceans form a resource for the development of electricity from water and form a habitat for a vast variety of marine organisms. Marine organisms form a major part of biodiversity fauna. All these are natural resources necessary to maintain the balance of the ecosystem.
So, option D "All of these"is the correct answer.
Pollution of air, water and soil affects the _______ of life and harms the ________
Report Question
0%
Quality, Biodiversity
0%
Biodiversity, Quality
0%
Quantity, Biodiversity
0%
Biodiversity, Quantity
The number of national parks and sanctuaries in India are
Report Question
0%
105 and 566
0%
80 and 441
0%
144 and 80
0%
80 and 414
Explanation
National Parks and Sanctuaries are built to provide the natural environment, plants and animals in these areas. They are mostly the areas of biodiversity hot spots. Human intervention and poaching is strictly prohibited by law and is a legal offence in these areas.
In India, there are 441 National Parks and 80 Sanctuaries.
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