Five Hypotheses Explain How Species Richness Affects Community Services, Following statement are given

A) Community services decline with decreased species richness in a stepwise fashion.

B) Species that play the same roles in a community can compensate for each other if some are lost under particular conditions

C) Species richness declines even slightly from its natural levels, community services are reduced immediately

D) Community services change as the number of species increases or decreases, but that the direction of change is not predictable.

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#Question id: 11004

#Unit 7. System Physiology – Animal

Which of the following is most likely to cause the heart to go into spastic contraction?

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#Question id: 23917

#General Aptitude

Oxygen toxicity (in humans) is caused by:

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#Question id: 6951

#Unit 5. Developmental Biology

In chick development, the cell movement during gastrulation is called:

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#Question id: 19787

#Unit 13. Methods in Biology

Polymerase chain reaction is based on___

a) Thermal modulation

b) pH dependent

c) Formation of amplicons by inserting some inputs for analysing its efficiency

d) Inter-complementary primers formation

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#Question id: 9566

#Unit 10. Ecological Principles

Which of the following adaptations helps kangaroo  rats conserve water?