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 Multiple Choice QuestionsMultiple Choice Questions


Assertion : Tropical rain forests are disappearing fastly from developing countries such as India.

Reason : No value is attached to these forests because these are poor in biodiversity.

  • If both Assertion and Reason are true and the reason is the correct explanation of the assertion

  • If both Assertion and Reason are true but the reason is not the correct explanation of the assertion

  • If Assertion is true statement but Reason is false

  • If both Assertion and Reason are false statements


If Assertion is true statement but Reason is false

Tropical rain are disappearing fast from developing countries such as India. Forest lands are converting into agricultural and industrial lands to fulfil the requirements of increasing population. Therefore, Humans are the main cause of rainforest destruction. Tropical rain forests are rich in biodiversity. 


Assertion: Red algae contribute in producing coral reefs.

Reason: Some red algae secrete and deposit calcium carbonate over their walls.

  • If both Assertion and Reason are true and Reason is the correct explanation of Assertion

  • If both Assertion and Reason are true but Reason is not the correct explanation of Assertion

  • If Assertion is true but Reason is false

  • If both Assertion and Reason are false.


If both Assertion and Reason are true and Reason is the correct explanation of Assertion

In some species of red algae called coralline algae. the cell walls become hardened with calcium carbonate. These algae hence important for the formation of coral reefs.

Coral reefs are formed through the accumulation of calcareous exoskeletons of coral animals, calcareous red algae and molluses. They form the foundation of reefs by secreting a calcium carbonate skeleton that provides protection for the coral polyps. Calcium carbonate is secreted continuously by the coral colony.


One of the ex situ conservation methods for endangered species is

  • wildlife sanctuaries

  • biosphere reserves

  • cryopreservation

  • national parks



Ex situ conservation is the preservation of components of biological diversity outside their natural habitats. For example, by protecting them in Zoos, Aquaria, Botanical gardens and gene banks. Also gametes of threatened species can be preserved in viable and fertile condition for long periods using Cryopreservation technique; eggs can be fertilised in vitro and plants can be propogated using tissue culture methods. Cryoprservation is a process of storing the living cells and tissues at very low temperatures.


Which one of the following is a pair of endangered species

  • Garden lizard and Mexican poppy

  • Rhesus monkey and Sal tree

  • Indian peacock and carrot grass

  • Hornbill and Indian aconite


Hornbill and Indian aconite

An endangered species is a species which has been categorized as very likely to become extinct. Endangered (EN), as categorized by the IUCN Red list , is the second most severe conservation status for wild populations in the IUCN's schema after Critically Endangered (CR).


Which one of the following pairs of geographical areas show maximum biodiversity in our country?

  • Sunderbans and Rann of Kutch

  • Eastern Ghats and West Bengal

  • Eastern Himalaya and Western Ghats

  • Kerala and Punjab


Eastern Himalaya and Western Ghats

Biodiversity is the variety of plant and animal life in the world or in a particular habitat. In India, eastern Himalayas and Western Ghats are the geographical areas in India which show the maximum diversity.


Which one of the following is the correctly matched pair of an endangered animal and a National Park?

  • Lion — Corbett National Park

  • Rhinoceros — Kaziranga National Park

  • Wild ass — Dudhwa National Park

  • Great Indian bustard —Keoladeo National Park


Rhinoceros — Kaziranga National Park

Rhinoceros (Rhinoceros unicorns) is an endangered animal and conserved in Kaziranga National Park.



The species, which is going to become extinct due to lack of proper care would be called

  • rare

  • endangered

  • vulnerable

  • extinct



Taxa whose numbers have been reduced to a critical level or whose habitats have been so drastically reduced that they are deemed to be in immediate danger of extinction are called endangered animals, for e.g. Lion tailed macaque, Crocodile, Musk deer, Rhino, etc.


In India highest amount of coal is present in :

  • West Bengal

  • Maharastra

  • Jharkhand

  • Assam



Highest amount of coal is found in Jharkhand.


Which one of the following is not included under in situ conservation?

  • Sanctuary

  • Botanical garden

  • Bisophere reserve

  • National park


Botanical garden

Botanical gardens (i.e., institutions that maintain living plant collections representing a large number of speices, genera and families) are the means of ex situ conservation (i.e., conservation outside the habitats).
Insitu conservation involves the conservation of genetic resources through their maintenance within natural or even human-made ecosystems in which they occur. It includes National parks, Sanctuaries, Biosphere reserves, Natural Reserves, Natural Monuments, Cultural Landscapes etc.



The Great Barrier Reef along the east coast of Australia can be categorised as

  • population

  • community

  • ecosystem

  • biome.



The Great Barrier Reef can be seen from outer space and is the world’s biggest single structure made by living organisms. The Great Barrier Reef is one of the richest and most complex natural systems in the world. The Reef's diverse range of habitats all connect and support each other, which means they are all vital to the life of the Great Barrier Reef.