Beta diversity is diversity

• in a community

• between communities

• in a mountain gradient

• on a plain

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

One of the ex situ conservation methods for endangered species is

• wildlife sanctuaries

• biosphere reserves

• cryopreservation

• national parks

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.

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.

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

• population

• community

• ecosystem

• biome.

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

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.

Which animal has gone extinct in recent times in India

• Acinonyx jubatus

• Antilope cervicapra

• Rhinocerus unicornis

• Panthera leo

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