Question

Assertion (A): Communities that comprise of more species tend to be more stable.
Reason (R): A higher number of species results in less year-to-year variation in total biomass.

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

Hint:

Communities with higher species diversity are more resilient to environmental changes and disturbances.

Answer 1

The Correct Option is A

Species-rich communities show greater stability as they buffer against environmental fluctuations. 
Reason (R) explains Assertion (A), as a higher number of species ensures resource utilization efficiency and ecological balance, minimizing biomass variation.