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A : A stable community should show much ...

A : A stable community should show much variation in year to year productivity.
R : It must not be resilient to occasional disturbance.

A

If both Assertion & Reason are true and the reason is the correct explanation od the assertion, then mark(1)

B

If both Assertion & Reason are true but the reason is not the correct expanation of the assertion, then mark (2)

C

If Assertion is true statements but Reason is false, then mark (3)

D

If both Assertion and Reason are false statements, then mark(4).

Text Solution

Verified by Experts

The correct Answer is:
D
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Read the statements regarding a stable community and choose the correct option : (i) Must be resistant to occasional disturbances. (ii) Should show much variation in productivity from year to year. (iii) Must be resistant to invasions by alien species.

Write whether the following statements are true or false . (i) Communties with more species tend to be more stable that those with less species. (ii) David Tilman found that plots with less species showed less year-to-year variation in total biomass. (iii) A stable community must be resistant to invasions by ecotic species. (iv) Effect of reduction in diversity has been explained by Alexander von Humboldt through rivet popper hypothesis.

[A] : The community that ends in a succession is known as climax community . [R] : For a species population in climax community to be stable , there must be a balance between natality and mortality .