Assertion: A community with more species is more stable than that with less species.
Reason: More the number of species, lesser the variation in the total biomass production year after year.

Options

A. Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A)
B. Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A)
C. Assertion (A) is true but reason (R) is false.
D. Assertion (A) is false but reason (R) is true.

Answer

A

Explanation

Communities with more species tend to be more stable than those with less species because they are able to resist occasional disturbance . David Tilman.s long term experiments showed the plots with more species, experience less year to year variation in total biomass.