Answer:
The undergrowth of tropical rain forest requires less sunlight.
Step-by-step explanation:
Undergrowth is the vegetation that grows on the forest floor below large trees and plants. Tropical And temperate forests have a wide diversity of undergrowth. Since undergrowth lies in shady forest floor they generally receive less amount of sunlight.
So the plants in the undergrowth can perform photosynthesis under low light conditions. The forest cover of tropical forest is denser than the forest cover of temperate forests. Thus the undergrowth of tropical forests receives less sunlight than that of temperate undergrowth.
The undergrowth of tropical rain forest having adapted to less sunlight availability requires less sunlight for growth.