Question

Some of the largest leaves in the world can be found on plants near the floor of dense tropical rain forests. Which of the following precursors for photosynthesis is most likely limited in these large leaves?A) oxygenB) carbon dioxideC) glucoseD) light

Answer 1

Light.

Explanation:

The tropical rainforest have a dense plant cover and the canopy of tall and densely packed trees do not allow much light to penetrate through them. However, light is essential precursor of photosynthesis for all green plants. To adapt in such conditions the plants that thrive on the forest floor of tropical rainforest developed large leaves so that more and more  available light could be trapped in order to carry out photosynthesis.

Thus we can say here light being limited ,acts  factor that lead to such morphology.