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 Multiple Choice QuestionsMultiple Choice Questions

71.

Beta diversity is diversity

  • in a community

  • between communities

  • in a mountain gradient

  • on a plain


72.

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


73.

One of the ex situ conservation methods for endangered species is

  • wildlife sanctuaries

  • biosphere reserves

  • cryopreservation

  • national parks


74.

Keystone species deserve protection because these

  • are capable of surviving in harsh environmental conditions

  • indicate presence of certain minerals in the soil

  • have become rare clue to overexploitation

  • play an important role in supporting other species.


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75.

Biosphere reserves differ from National Parks and Wildlife sanctuaries because in the former

  • human beings are not allowed to enter

  • people are an integral part of the system

  • plants are paid greater attention than the animals

  • living organisms are brought from all over the world and preserved for posterity.


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76.

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

  • population

  • community

  • ecosystem

  • biome.


C.

ecosystem

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.


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77.

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


78.

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.


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79.

Which animal has gone extinct in recent times in India

  • Acinonyx jubatus

  • Antilope cervicapra

  • Rhinocerus unicornis

  • Panthera leo


80.

What is true about cleavage in the fertilized egg in humans

  • It is meroblastic

  • It starts while the egg is in fallopian tube

  • It is identical to normal mitosis

  • It starts when the egg reaches in uterus


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