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CBSE Questions for Class 12 Medical Biology Biodiversity And Its Conservation Quiz 2 - MCQExams.com
CBSE
Class 12 Medical Biology
Biodiversity And Its Conservation
Quiz 2
Genetic diversity is related to
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Types of species within a community
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Types of communities in an area
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Gene based diversity
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Diversity and evolution of species with a genus
Explanation
The variety and variability of living organisms (both plants and animals) are known as biodiversity. The variation measured by biodiversity is at the genetic, species, and ecosystem level. Gene-based diversity is known as genetic diversity. It is a way for populations to adapt to changing environments.
So, the correct answer is 'Gene-based diversity'.
Biological diversity day is
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5 June
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21 March
0%
3 October
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22 May
Explanation
Biodiversity day or Biological diversity day is an UN-sanctioned day celebrated internationally. It addresses the promotion of biodiversity issues. Currently, the day is held on May 22. Earlier, it was held on December 29 to celebrate the day on which the Convention on Biological Diversity came into action.
So, the correct answer is option D.
Ranganathittoo Sanctuary (Mysore) is known for population of
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Bison
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Tiger
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Goats
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Birds
Explanation
A naturally occurring sanctuary, such as an island, which protects species from getting hunted, predated or poached is called as a wildlife refuge. It is also known as a wildlife sanctuary. Being a protected area, it is a geographic territory within which wildlife is protected. Ranganathittoo Sanctuary (Mysore) is known for the population of Birds.
So, the correct answer is 'Birds'.
Dhudhwa National Park is located in
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Gujarat
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Uttar Pradesh
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Rajasthan
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Madhya Pradesh
Explanation
Being a part of the Dhudhwa tiger reserve, Dhudhwa National Park is located in Uttar Pradesh, India. A park in use for conservation purposes is known as a National park. It is basically a reserve of natural, semi-natural, or developed land that a sovereign state declares or owns. Flora and fauna are provided immense protection in such areas. Currently, in India, we have 166 national parks.
So, the correct answer is 'Uttar Pradesh'.
Rajaji national park is located in
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Delhi
0%
Uttarakhand
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Tamil Nadu
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Karnataka
Explanation
Rajaji National Park, a tiger reserve is located in Uttarakhand.
A park in use for conservation purposes is known as a National park. It is basically a reserve of natural, semi-natural, or developed land that a sovereign state declares or owns. Flora and fauna are provided immense protection in such areas. Currently, in India, we have 166 national parks.
So, the correct answer is 'Uttarakhand'.
Largest living lemur, Indri indri occurs in
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India
0%
Mauritius
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Fiji
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Madagascar
Explanation
Indri indri lemur also known as babakoto, is the largest living lemur on Earth. It as a head-and-body length of about 64–72 cm (25–28 in) and a weight of between 6 to 9.5 kg (13 to 21 lb). It occurs in Madagascar. It plays an important part in the myths of the residents of Madagascar, and legends with various stories in existence accounting for its origin. According to IUCN, it is classified as a critically endangered species.
So, the correct answer is 'Madagascar'.
Number of plant species estimated to be present in India is
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40,000
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45,000
0%
58,000
0%
80,000
Explanation
India is one of the richest countries when it comes to the diversity of plant species. Around 45,000 plant species are estimated to be present in India. There are eight main florist regions in India which are Western Himalayas, Eastern Himalayas, Assam, Indus plain, Ganges plain, the Deccan, Malabar, and the Andaman Islands. So, great efforts for protecting the immense biodiversity should be done.
So, the correct answer is '45,000'.
Ex situ conservation is carried out in
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Sanctuary
0%
National park
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Biosphere reserve
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Zoo
Explanation
A) Ex-situ conservation is done by preserving the components of biological diversity outside their natural habitats. It is done by conserving genetic resources, as well as wild and cultivated or species. Examples include Gene banks, Microbial cultures, zoo, etc.
B) In-situ conservation is done by conserving the species in their natural habitats. It is the best way of biodiversity conservation. Examples include Sacred groves, National parks, etc.
So, the correct answer is 'Zoo'.
Ranthambore National Park is situated in
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Maharashtra
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Rajasthan
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Gujarat
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U.P
Explanation
Ranthambore N
ational Park is situated in Rajasthan. A park in use for conservation purposes is known as a National park. It is basically a reserve of natural, semi-natural, or developed land that a sovereign state declares or owns. Flora and fauna are provided immense protection in such areas. Currently, in India, we have 166 national parks.
So, the correct answer is 'Rajasthan'.
National Park associated with Rhinoceros is
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Kaziranga
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Ranthambore
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Corbett
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Valley of Flowers
Explanation
Kaziranga national park present in Assam is famous for conserving Rhinoceros. A park in use for conservation purposes is known as a National park. It is basically a reserve of natural, semi-natural, or developed land that a sovereign state declares or owns. Flora and fauna are provided immense protection in such areas. Currently, in India, we have 166 national parks.
So, the correct answer is 'Kaziranga'.
Kanha National Park is located in
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Assam
0%
Rajasthan
0%
Uttar Pradesh
0%
Madhya Pradesh
Explanation
Kanha National Park, situated in Madhya Pradesh is famous for conserving tigers. A park in use for conservation purposes is known as a national park. It is basically a reserve of natural, semi-natural, or developed land that a sovereign state declares or owns. Flora and fauna are provided immense protection in such areas. Currently, in India, we have 166 national parks.
So, the correct answer is 'Madhya Pradesh'.
Kanha National Park is famous for
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Rhinoceros
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Tiger
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Birds
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Crocodiles
Explanation
Kanha National Park, situated in Madhya Pradesh is famous for conserving Tigers. A park in use for conservation purposes is known as a National park. It is basically a reserve of natural, semi-natural, or developed land that a sovereign state declares or owns. Flora and fauna are provided immense protection in such areas. Currently, in India, we have 166 national parks.
So, the correct answer is 'Tiger'.
Which one is a hot spot of biodiversity
?
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Aravalli hills
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Western Ghats
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Indogangetic plain
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Eastern Ghats
Explanation
A mountain range that runs parallel to the western coast of the Indian peninsula is known as the Western Ghats. The area has over 7,402 species of flowering plants, 1,814 species of non-flowering plants, 139 mammal species, 508 bird species, 179 amphibian species, 6,000 insects species, and 290 freshwater fish species. Many undiscovered species also exist. Around 325 globally threatened species also occur here. And this makes clear that the Western Ghats are the most biodiversity-rich zone in India.
So, the correct answer is 'Western Ghats'.
Dachigam sanctuary is located in
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West Bengal
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Jammu and Kashmir
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Madhya Pradesh
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Rajasthan
Explanation
Dachigam sanctuary is located in Jammu and Kashmir. A naturally occurring sanctuary, such as an island, which protects species from getting hunted, predated or poached is called as a wildlife refuge. It is also known as a wildlife sanctuary. Being a protected area, it is a geographic territory within which wildlife is protected. 515 wildlife sanctuaries are present in India currently. Conservation of flora and fauna along with the prohibition of hunting is done here.
So, the correct answer is 'Jammu and Kashmir'.
Largest tiger population occurs in
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Kanha National Park
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Corbett National Park
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Sunderbans National Park
0%
Ranthambore National Park
Explanation
Bengal tiger or the mangrove tiger is conserved in Sunderbans National Park located in West Bengal. The largest population of tigers occurs here. The delta which is formed by the confluence of Ganges, Brahmaputra and Meghna Rivers in the Bay of Bengal is known as Sunderbans. It is a mangrove area and contains lots of Mangrove forests. Four world heritage sites occur here viz Sundarbans National Park, Sundarbans West, Sundarbans South, and Sundarbans East Wildlife Sanctuaries. The word 'Sunderbans' means beautiful forests.
So, the correct answer is 'Sunderban National Park'.
Biodiversity act of India was passed by Parliament in
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1992
0%
1996
0%
2000
0%
2002
Explanation
An Act of the Parliament of India for the preservation of biological diversity in India was passed in 2002 known as the Biodiversity Act of India. This act provides methods for the sharing of benefits in an equitable manner arising out of the use of traditional biological resources and its knowledge. The function of this act includes: Regulation of acts prohibited under the Act,
Advise the Government on the conservation of biodiversity, etc.
Any offense under this Act is non-bailable and cognizable.
So, the correct answer is '2002'.
Which one is not observed in biodiversity hotspot?
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Less interspecific competition
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Species richness
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Endemism
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Accelerated species loss
Explanation
The large areas which contain exceptional concentrations of species endemism and are experiencing very high rates of habitat loss are called ecological hot spots. These are also known as biodiversity hotspots. 2.3% of the Earth's land surface is represented by them. Currently, 36 biodiversity hot spots exist in the world. An area must meet two strict criteria for becoming an ecological hotspot: Contain at least 1,500 species of vascular plants found nowhere else on Earth (known as "endemic" species), Have lost at least 70 percent of its primary native vegetation. As so many species occur in such areas, interspecific competition is significant.
So, the correct answer is 'Less interspecific competition'.
Indian share in global species diversity is about
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8%
0%
6%
0%
4%
0%
2%
Explanation
Great biodiversity exists on our planet. Millions of living plants and animal species are flourishing on Earth. An approximate of 1.7 million organisms are known to exist. New species are getting discovered and recorded every year. Indian share in global species diversity is about 8%.
So, the correct answer is '8%'.
A hot spot in India is
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Tropical Andes
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Madagascar
0%
Western Himalayas
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Mesoamerica
Explanation
Ecological hot spots are large areas of Earth's land surface which have high concentrations of plant endemism and also experience high rates of habitat loss. In India, 4 ecological hot spots are presently identified. The Himalayas, the Western Ghats, the Indo-Burma region and the Sundaland constitute the 4 biodiversity hot spots in our country. One of the major features of these places is the presence of numerous endemic species.
So, the correct answer is 'Western Himalayas'.
Tiger is not a resident in which of the following national park?
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Ranthambore
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Sunderbans
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Gir
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Gim Corbett
Explanation
Gir National Park in Gujarat is famous for Asiatic lions and is located in Gujarat. Rest three have tigers as their residents. A park in use for conservation purposes is known as a National park. It is basically a reserve of natural, semi-natural, or developed land that a sovereign state declares or owns. Flora and fauna are provided immense protection in such areas. Currently, in India, we have 166 national parks.
So, the correct answer is 'Gir'.
One of the ex-situ conservation methods for endangered species is
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Wildlife sanctuaries
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Biosphere reserves
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Cryopreservation/seed bank
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National parks
Explanation
A) Ex-situ conservation is done by preserving the components of biological diversity outside their natural habitats. It is done by conserving genetic resources, as well as wild and cultivated or species. Examples include Gene banks, Microbial cultures, Cryopreservation, etc.
B) In-situ conservation is done by conserving the species in their natural habitats. It is the best way of biodiversity conservation. Examples include Sacred groves, National parks, etc.
So, the correct answer is 'Cryopreservation/seed bank'.
Conservation of organisms in a natural habitat is called
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Ex situ conservation
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In situ conservation
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Germplasm conservation
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Both A and B
Explanation
A) Ex-situ conservation is done by preserving the components of biological diversity outside their natural habitats. It is done by conserving genetic resources, as well as wild and cultivated or species. Examples include Gene banks, Microbial cultures, Cryopreservation, etc.
B) In-situ conservation is done by conserving the species in their natural habitats. It is the best way of biodiversity conservation. Examples include Sacred groves, National parks, etc.
So, the correct answer is 'In situ conservation'.
One of the following statements is incorrect with reference to biodiversity. Identify it
.
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Biodiversity increases from higher altitudes to lower altitudes.
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Depletion in genetic diversity of crop plants is mainly due to introduction of better varieties with high yield and disease resistance, etc.
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The richest reservoirs of animal and plant life with few or no threatened species are called hotspots.
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Biodiversity decreases from equator to polar regions.
Explanation
The large areas which contain exceptional concentrations of plant endemism and are experiencing very high rates of habitat loss are called ecological hot spots. Thus, they have a very high number of threatened species. These are also known as biodiversity hotspots. 2.3% of the Earth's land surface is represented by them. Currently, 36 biodiversity hot spots exist in the world.
So, the correct answer is 'The richest reservoirs of animal and plant life with few or no threatened species are called hotspots'.
Indian Rhinoceros is a natural inhabitant of which of the Indian states
?
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Himachal Pradesh
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Uttar Pradesh
0%
Assam
0%
Uttarakhand
Explanation
Indian Rhinoceros is a natural inhabitant of Assam. Kaziranga National Park is located in Assam and is famous for one-horned rhinoceros. A park in use for conservation purposes is known as a National park. It is basically a reserve of natural, semi-natural, or developed land that a sovereign state declares or owns. Currently, in India, we have 166 national parks.
So, the correct answer is 'Assam'.
Hot spots of biodiversity means
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Areas of earth that contain many endemic species
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Species serves as proxy for entire community in particular areas
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Species in particular niche/area
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Species diversity at particular area
Explanation
Ecological hot spots are large areas of Earth's land surface which have high concentrations of plant endemism and also experience high rates of habitat loss. In India, 4 ecological hot spots are presently identified. The Himalayas, the Western Ghats, the Indo-Burma region and the Sundaland constitute the biodiversity hot spots in our country. One of the major features of these places is the presence of numerous endemic species.
So, the correct answer is 'Areas of earth that contain many endemic species'.
Evil quartet is related to
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Loss of biodiversity
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Loss of alien species
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Loss of standing crop
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Loss of climax community
Explanation
Jarod Diamond in 1984 listed four principal mechanisms for the loss of biodiversity. It was known as the 'Evil quartet'. It was also known as ‘four horsemen of the ecological apocalypse. The four mechanisms were:-
a) overhunting (or overexploitation),
b) introduced species,
c) habitat destruction and
d) chains of linked extinctions (trophic cascades, or co-extinctions).
So, the correct answer is 'Loss of biodiversity'.
Which one shows maximum genetic diversity in India?
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Groundnut
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Rice
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Maize
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Mango
Who observed that within a region, species richness increased with increasing explored area but only upto a limit
?
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Paul Ehrlich
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David Tilman
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Alexander von Humboldt
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Edward Wilson
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Robert Mayr
Explanation
During his pioneering and extensive
explorations in the wilderness of South American jungles, the great
German naturalist and geographer Alexander von Humboldt
observed that within a regional species
richness increased with the increasing
explored area, but only up to a limit. In
fact, the relationship between species richness
and area for a wide variety of taxa
(angiosperm plants, birds, bats,
freshwater fishes) turns out to be a
rectangular hyperbola. On
a logarithmic scale, the relationship is a
straight line described by the equation
log S = log C + Z log A
where
S= Species richness A= Area
Z = slope of the line (regression
coefficient)
C = Y-intercept.
So, the correct answer is 'Alexander von Humboldt'.
The term $$\alpha$$ - diversity refers to
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Genetic diversity
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Community and ecosystem diversity
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Diversity among the plants
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Species diversity
Explanation
The local species pool is known as alpha diversity. It is also the diversity present within the community. The term was introduced by R. H. Whittaker. Example of such diversity includes high tree diversity throughout the Amazon Rainforests of Ecuador. Generally, gamma diversity = alpha diversity x beta diversity.
So, the correct answer is 'Species diversity'.
The largest tiger reserve in India is
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Nagarjunsagar - Srisalam
0%
Periyar
0%
Nagarhole
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Valmiki
Explanation
The largest tiger reserve in India is Nagarjunsagar tiger reserve located in Srisalam. Governed by Project Tiger, administrated by the National Tiger Conservation Authority (NTCA), there are 50 tiger reserves in India. 70 percent of the world's tigers are in India. The Tigers are maintained for their scientific, economic, aesthetic, cultural and ecological values.
So, the correct answer is 'Nagarjunsagar - Srisalam'.
Which one has the largest species variety in India
?
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Potato
0%
Maize
0%
Wheat
0%
Rice
Explanation
Species diversity is the number of different species that are represented in a given community. In India, rice has the largest species diversity or variety.
India has 6,000 species variety of rice. The number has greatly reduced from before. The commonest rice is basmati rice.
So, the correct answer is 'Rice'.
Which region is rich in species diversity
?
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North Pole
0%
Temperate region
0%
Tropical region
0%
South Pole
Explanation
Species diversity increases towards the equator. The two main reasons are phylogenetic niche conservatism and ecological productivity.
The relatively high temperatures in the tropics generate and maintain high diversity.
However, the tropical rainforests in developing countries are getting cleared nowadays, which is leading to a great loss of biodiversity.
So, the correct answer is 'Tropical region'.
Vermicompost is a/an ___________.
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inorganic fertiliser
0%
toxic substance
0%
organic biofertiliser
0%
synthetic fertiliser
Dehang Debang biosphere reserve is located in
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Sikkim
0%
Assam
0%
Arunachal pradesh
0%
Kerala
Explanation
Dehang Debang biosphere reserve is located in Arunachal Pradesh. An ecosystem with plants and animals of unusual scientific and natural interest is known as a biosphere reserve. UNESCO has given this label for protecting these sites. The main motive is to promote the management, research, and education in conservation of education. It also includes the 'sustainable use of natural resources'. The number of biosphere reserves in May 2002 was 408 in 94 countries.
So, the correct answer is 'Arunachal Pradesh'.
Nanda Devi Biosphere reserve is found in
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Uttarakhand
0%
Assam
0%
Himachal Pardesh
0%
Andhra Pardesh
Explanation
Nanda Devi Biosphere reserve is found in Uttarakhand, India. An ecosystem with plants and animals of unusual scientific and natural interest is known as a biosphere reserve. UNESCO has given this label for protecting these sites. The main motive is to promote the management, research, and education in conservation of education. It also includes the 'sustainable use of natural resources'. The number of biosphere reserves in May 2002 was 408 in 94 countries.
So, the correct answer is 'Uttarakhand'.
First national park of India is
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Desert National Park
0%
Nanda Devi National Park
0%
Sanjay Gandhi National Park
0%
Corbett National Park
Explanation
The first national park of India was established as Hailey national park in 1936, which is now known as Jim Corbett National Park. It is situated in Uttarakhand. This national park was established to protect endangered Bengal tiger.
So, the correct answer is 'Corbett National Park'.
First national park of the world is
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Peak District
0%
Snowdonia
0%
Yellowstone
0%
Lake District
Explanation
A. Peak District national park is situated in central England.
B. Snowdonia national park is situated in northwest wales.
C. Yellowstone national park is situated in U.S.
D. Lake District national park is situated in England.
First National Park was established in U.S. by U.S. congress and it was named as Yellowstone national park. It was also the first national park in U.S.
So, the correct answer is 'Yellowstone'.
Never look a gift horse in the _____________.
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face
0%
mane
0%
mouth
0%
nose
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Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
0%
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
0%
Assertion is correct but Reason is incorrect
0%
Both Assertion and Reason are incorrect
Explanation
In-situ conservation is done by conserving the species in their natural habitats. It is the best way of biodiversity conservation. The reason is that it maintains recovering populations of the organisms in the surroundings where they have developed. Examples include sacred groves, national parks, biosphere reserves, sanctuaries, etc.
So, the correct answer is 'Both Assertion and Reason are correct and Reason is the correct explanation for Assertion'.
Palamau (Betla) national park is situated in
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Odisha
0%
West Bengal
0%
Jharkhand
0%
Bihar
Explanation
Palamau (Betla) national park is situated in Jharkhand. A park in use for conservation purposes is known as a National park. It is basically a reserve of natural, semi-natural, or developed land that a sovereign state declares or owns. Currently, in India, we have 166 national parks.
So, the correct answer is 'Jharkhand'.
Kanha Biosphere Reserve is established in
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0%
Madhya Pradesh
0%
Uttar Pradesh
0%
Bihar
0%
Maharashtra
Explanation
Kanha Biosphere Reserve is established in Madhya Pradesh. An ecosystem with plants and animals of unusual scientific and natural interest is known as a biosphere reserve. UNESCO has given this label for protecting these sites. The main motive is to promote the management, research, and education in conservation of education. It also includes the 'sustainable use of natural resources'. The number of biosphere reserves in May 2002 was 408 in 94 countries.
So, the correct answer is 'Madhya Pradesh'.
Which one of these is not included in the biodiversity hotspots of India?
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Western Ghats
0%
Himalayas
0%
Indo-Burma
0%
North Indian Plains
Explanation
India currently harbours 4 major biodiversity hotspots.
Eastern Himalaya.
Indo-Burma.
The Western Ghats and Sri Lanka; and.
Sundaland (Andaman & Nicobar)
So, the correct option is '
North Indian Plains
'.
Sacred groves are specially useful in
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generating environmental awareness
0%
preventing soll erosion
0%
year-round flow of water in rivers
0%
conserving rare and threatened species
Explanation
Sacred groves are one of the methods of conserving rare and threatened species as local people worship and not allow the killing of animals and cutting of trees in such areas like Khasi and Jaintia Hills in Meghalaya, Aravalli Hills in Rajasthan etc.
So the correct option is 'conserving rare and threatened species'
Name the tree shown in the given picture.
Report Question
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Banyan
0%
Fir
0%
Coconut
0%
Peepal
Explanation
Coconut tree is a palm tree in the family Arecacea. It is a large palm which can grow upto 30 meters tall and has leaves which can be 4 to 6 meters long. Its applications vary from use in soaps and medicine to food.
A cheerful look makes a dish ______________.
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palatable
0%
tasty
0%
a feast
0%
a dinner
Which of the following is not an example of in situ conservation?
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Biosphere reserves
0%
National parks
0%
Wildlife sanctuaries
0%
Zoological parks.
Explanation
In zoological parks animals are brought from various places and kept in captivity for display.
In situ conservation keeps the organism in its original habitat.
So, the correct option is 'Zoological parks'.
Which of the following is not an objective of Conservation of Biodiversity?
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Conservation of biodiversity
0%
Sustainable use of biodiversity
0%
Fair and equitable sharing of benefits arising out of genetic resources
0%
Selective hunting of dangerous and threatening species.
Explanation
Biodiversity provides numerous direct and indirect service to human beings. They maintain ecological balance and ecosystem stability.
For biodiversity conservation, the destruction of habitat should be stopped.
Biodiversity should be used sustainably.
Fair and equitable sharing of benefits out of resources is crucial.
So, the correct option is 'Selective hunting of dangerous and threatening species.'
Conservation in the natural habitat is
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0%
in situ
0%
ex situ
0%
zoo
0%
botanical garden
Explanation
In-
situ conservation is
the
conservation
of genetic resources in natural populations of plant or animal species or in their natural habitat.
So, the correct option is 'in situ'.
.
Which of the following statements is incorrect regarding biodiversity?
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Biodiversity deals with biological and geographical units such as genes, chromosomes, species, families and biogeographic religions.
0%
Biodiversity is an addition sum of genetic, taxonomic and ecosystem diversity.
0%
It is a measure of the amount of resources shared by the human population.
0%
None of these
Explanation
Biodiversity refers to the variety and variability of life on Earth. Biodiversity is typically a measure of variation at the genetic, species, and ecosystem level.
It deals with biological and geographical units such as genes, chromosomes, species, families and biogeographic religions
It is an additional sum of genetic, taxonomic and ecosystem diversity.
Biodiversity is a measure of species richness i.e The number of groups of genetically or functionally related individuals.
Hence Biodiversity is a measure of the number of resources shared by the human population is a wrong statement.
So, the correct answer is 'Option C'.
Which is not used for ex situ plant conservation
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Botanical gardens
0%
Field gene banks
0%
Seed banks
0%
Shifting cultivation
Explanation
In situ conservation is the production and management of important components of biological diversity through a network of protected areas. This can be wildlife sanctuaries, national parks, biosphere reserves etc.
Ex situ conservation is the conservation of selected rare plants or animals in places outside the natural forms.
Ex-situ conservation includes off-site collection and gene banks. Ex situ conservation is conserving the animals and plant outside the natural habitat.
Ex situ conservation includes offsite collection and gene banks.
Offsite collections are the live collection of file and domesticated species in the botanical garden.
Gene bank is an institution where available plant material is preserved in a viable condition.
Seed Bank stores seed in the viable state
Zoos or zoological parks are places where animals are kept in captivity and bred.
So, the correct option is 'Shifting cultivation'
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