Question

If the rate of respiration becomes more than the rate of photosynthesis, plants will :

(a) continue to live, but will not be able to store food.

(b) be killed instantly.

(c) grow more vigorously because more energy will be available.

(d) stop growing and die gradually of starvation.

Answer 1

When rate of respiration exceeds rate of photosynthesis, what will happen to plant stop growing and die gradually of starvation.
This happens if the rate of respiration continues to exceed the rate of photosynthesis because initially the plant will use its stored food reserves and when the food reserves will exhaust it will eventually die.

Hence, the correct option is (d).