Question

The following three kinds of leaves were exposed to light:
I. Variegated leaf
II. Green leaves partially covered with black paper
II. Green leaf
Presence of starch was seen in

• A. Only in the green leaves
• B. Both green and variegated leaves
• C. All the leaves in which green parts exposed to light
• D. Only variegated leaf

Answer 1

Answer: (C)

Experiments have been carried out to look for starch formation in two leaves -a variegated leaf or a leaf that was partially covered with black paper and one that was exposed to light. On testing these leaves for starch it was clear that photosynthesis occurred only in the green parts of the leaves in the presence of light.