CBSE Questions for Class 12 Medical Biology Biodiversity And Its Conservation Quiz 12 - MCQExams.com

This animal ejects a defensive fluid produced by its anal glands when in danger. The fluid which is foul smelling and highly toxic, is sprayed as far as $$3$$ metres. Name the animal.
  • Skunk
  • Slender loris
  • Jellyfish
  • Armadillo
This lizard, native to Indonesia, is the largest living species of lizard in the world growing up to $$10$$ ft. These lizards dominate the ecosystems in which they live. It hunts and surprisingly attacks its prey including invertebrates, birds, and mammals. What is this lizard called?
  • Iguana
  • Skink
  • Komodo dragon
  • Gila monster
With its slim dark body and sharp claws, this South and Central American mammal is related to the raccoon. Its long tail helps it in climbing and travelling around its home in the rainforest trees. The captive specimens avidly eat honey, hence, the name honey bear which it shares with sun bear. Which animal are we talking about?
  • Serval
  • Aye-aye
  • Kinkajou
  • Jerboa
It is one of the world's oddest looking birds that builds its nest in a burrow. It has a triangular hooked beak and "sea parrot" is its nickname. Name the bird.
  • Atlantic puffin
  • Albatross
  • Pelican
  • Arctic tern
Who among the following gave an incorrect statement?
Rohan : There are more than 1000 varieties of mangoes in India.
Priti     : Every year, the International Mango Festival is held in Nagpur. 
Raj      :  Mango fruit is an excellent source of vitamin A, B, C, E and flavonoids.
Simaran : Best 50 varieties of mangoes are only exhibited in international Mango Festival.
  • Priti and Raj
  • Rohan and Simran
  • Priti and Simran
  • Rohan and Raj
Which of the following statements are correct?
(i) Hydra has a number of cilia around its mouth.
(ii) Frog uses its long, sticky tongue to catch insects
(iii) Mosquito sucks up the blood of animals with its tentacle. 
  • (i) and (iii) only
  • (i) only
  • (ii) only
  • (ii) and (iii) only
Extinction is caused by ............
  • Deforestation
  • Over-exploitation of animals
  • The destruction of aquatic habitats by pollution
  • All of the above
Hot spots are the examples of 
  • Insitu conservation
  • Exsitu conservation
  • Wildlife protection
  • Water conservation
What percentage of earth's land area is covered by the 25 hotspots?
  • 1.4%
  • 2.3%
  • 3.4%
  • 3.6%
The species diversity of plants on earth is not more than ______ of the total.
  • 2.4%
  • 22%
  • 8.1%
  • 8.5%
Taxonomical aids are helping hands of taxonomy, and two of them functions for ex-situ conservation strategy, these are?
  • Botanical garden and herbarium
  • Zoological parks and museums
  • Zoological parks and botanical gardens
  • Museums and botanical gardens
Black buck, golden langur and Asiatic wild ass are likely to be in danger of extinction. This species belongs to
  • Extinct
  • Endangered
  • Vulnerable
  • Rare
An example of ex-situ conservation is by
  • Seed bank
  • Community protected small or large forests
  • National parks
  • Wildlife Sanctuary
There are four ecological blocks are given to determine species diversity. Which of the ecological blocks showing the same degree of species richness?

1149607_f2cb04d043c34eae949343e6c9e36f8b.png
  • A, B
  • A, B, C
  • A, B, C & D
  • A, B & D
Alexander Von Humboldt described ..................... for the first time.
  • Ecological biodiversity
  • Laws of limiting factor
  • Species-area relationship
  • Population growth equation
All of the following are included in 'Ex-situ conservation' except.
  • Wildlife safari parks
  • Sacred groves
  • Botanical gardens
  • Seed banks
Regional diversity is also called
  • Alpha diversity
  • Beta diversity
  • Gamma diversity
  • Ecosystem diversity
India is considered as one of the megadiversity country because
  • many biodiversity hot spots are present in the country
  • it has highest biodiversity in the world
  • it has highest variety of flora and fauna
  • it has $$8.1$$% share in global biodiversity and has $$2.4$$% of world's land area
An environment conservation group performed a survey of some diverse locations in the country and represented it as under.
Which amongst these sites should be included as a biodiversity hotspot?
1245274_edd7e53fc7ca4669b688c10d98a2e46b.png
  • Site $$A$$
  • Site $$B$$
  • Site $$C$$
  • Site $$D$$
India is among $$12$$ megadiversity countries of world, due its percentage contribution in global species diversity, that is:-
  • $$1.8 \%$$
  • $$2.4 \%$$
  • $$8.1 \%$$
  • $$4.2 \%$$
The places meant for the conservation of biodiversity in their natural habitat are:
(i) Zoological garden
(ii) Botanical garden
(iii) Sanctuary
(iv) National park
  • i & ii
  • ii & iii
  • iii & iv
  • i & iv
Loss of biodiversity in a region may lead to _________________.
  • Increase in plant production
  • Increase resistance to Drought
  • Increased variability in plant productivity
  • Both (1) and (2) above
Namdapha National Park located in which state?
  • Nagaland
  • Maharashtra
  • Mizoram
  • Arunachal Pradesh
In the above diagram four areas are given . In which area has maximum species diversity:
1485671_7b39ac15c5264f358ffd56b1c8836275.png
  • A
  • C
  • B
  • D
Which of the following character is not related to biodiversity hot spot?
  • High species richness
  • High Endemism
  • Lesser inter specific interaction
  • Habitat loss
How many national parks are in gujarat?
  • $$5$$
  • $$4$$
  • $$21$$
  • $$24$$
Bori Wildlife Sanctuary is located in..........
  • Karnataka
  • Nagaland
  • Gujarat
  • Madhya Pradesh
Which of the following are the new species of freshwater catfish discovered in Idukki and Pathanamthitta districts of Kerala in November 2013?
Horabagrus melanosoma
Mystus heoki
Mystus indicus
Mystus miami
Select the answers from the codes given below:
  • 1 only
  • 1 and 2 only
  • 1, 2 and 3 only
  • All of the above
Consider the following statements
The Pacific salmon fish uses the Earth's magnetic field to find their way
Machli, Queen Mother of tiger dynasty was found in the Ranthambhore National Park, India.
Which of the above statements is/are correct?
  • 1 only
  • 2 only
  • both 1 and 2
  • None of these
Which of the following is a feature of biodiversity hotspots?
  • Rarity
  • Endemism
  • Threatened from destruction
  • Diversity
How many statements are incorrect?

(i) In disruptive selection, more individuals acquire peripheral character value at both ends of the distribution curve.

(ii) Jawless fishes evolved around 320mya and seaweeds existed around 350mya.

(iii) Ichthyosaurs evolved around 200mya.

(iv) First cellular form of life evolved around 2bya.

(v) North America joined South America and South American mammals dominated over North American mammals.
  • One
  • Two
  • Three
  • Four
Where are Hotspots of biodiversity in India?
  • Western ghats, Eastern ghats, Indo Burma
  • Indo Burma, Eastern ghats and Sri Lanka Himalayas
  • Western ghats & Sri Lanka, Indo Burma and Himalaya
  • Eastern ghats & Sri Lanka, Indo Burma
Choose the correct Answer.
There are about 8 wildlife sanctuaries and 492 National parks in India. 
  • True
  • False
Select the option from the following which is not a major characteristic features of biodiversity hotspots 
  • Large number of species
  • Destruction of habitats
  • Abundance of endemic species
  • Large number of exotic species
Which evolutionary force decreases the genetic diversity of a population by increasing the proportion of smaller individuals?
  • Mutation
  • Gene flow
  • Bottle neck effect
  • Random mating
In Europe and Scandinavia, 'PH' value of rain and snow is
  • 2 to 4
  • 4 to 5
  • 3 to 5
  • 9
Which of the following Environmentalists first gave the concept of Biodiversity 'hotspots'?
  • Gaylord Nelson
  • Norman Myers
  • John Muir
  • Julia "Butterfly" Hill
The state which constituted green bench
  • Kerala
  • Tamilnadu
  • Assam
  • Madhya Pradesh
During the course of a year, the sun will disappear from view near the North Pole on what date?
  • June 21
  • September 23
  • December 23
  • January 1
What is altitude of menopause?
  • 80 km
  • 45 km
  • 50 km
  • 90 km
India's first National Centre for Marine Bio-diversity (NCMB) is located in:
  • Bhavnagar
  • Jamnagar
  • Mumbai
  • Pondicherry
The main reason(s) for warm summers in northern middle latitudes is that:
  • The earth is closer to the sun in summer
  • The sun is higher in the sky and we receive more direct solar radiation
  • The days are longer
  • Only (b) and (c) are correct
Sacred groves found in several regions in India are example of 
  • in situ conservation
  • ex situ conservation
  • reintroduction
  • restoration
Which among the following is not correctly matched?
  • Dampa Sanctuary - Mizoram
  • Valmiki Reserve - Bihar
  • Rohla National park - Himachal Pradesh
  • Gandhi Sagar Sanctuary - Rajasthan
Biodiversity
  • Increases towards the equator
  • Decreases towards the equator
  • Remains same throughout the planet
  • Has no effect on change in latitude
Species-Area relationship is represented on a log scale as
  • Hyperbola
  • Rectangular hyperbola
  • Linear
  • Inverted
Animals are protected from poachers in:
  • Zoological Parks
  • Botanical Parks
  • Both (a) and (b)
  • None of these
In our national park, protection is provided to - 
  • Flora only
  • Flora and fauna
  • Fauna only
  • Entire ecosystem
Conservation means-
  • we have to stop the use of resources completely.
  • we have to use the resources wisely and judiciously
  • we have to protect the resources by just not using it as per our demands.
  • all of the above.
Which one of the following is not a feature of biodiversity hot spots?
  • Large number of species
  • Abundance of endemic species
  • Mostly located in the polar regions
  • Mostly located in the tropics
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