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The following three kinds of leaves were...

The following three kinds of leaves were exposed to light :
I. Variegated leaf
II. Green leaves partially covered with black paper
III. 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

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AI Generated Solution

The correct Answer is:
To determine the presence of starch in the three types of leaves exposed to light, we need to analyze each type of leaf and understand the process of photosynthesis and starch formation. ### Step-by-Step Solution: 1. **Understanding Photosynthesis**: - Photosynthesis is the process by which plants convert light energy into chemical energy in the form of glucose. This process occurs in the chlorophyll-containing parts of the plant, primarily in the green leaves. 2. **Identifying the Leaves**: - **Variegated Leaf**: This leaf has both green and non-green (white or yellow) parts. The green parts can perform photosynthesis, while the non-green parts cannot. - **Green Leaf Partially Covered with Black Paper**: This leaf has some green areas exposed to light and some areas covered by black paper. The exposed green parts can perform photosynthesis. - **Green Leaf**: This leaf is entirely green and can perform photosynthesis throughout. 3. **Starch Formation**: - Starch is formed from glucose produced during photosynthesis. Only the parts of the leaves that are exposed to light and can perform photosynthesis will produce glucose and subsequently store it as starch. 4. **Analyzing Each Leaf Type**: - **Variegated Leaf**: Starch will be present only in the green parts of the leaf that are exposed to light. - **Green Leaf Partially Covered with Black Paper**: Starch will be present in the exposed green parts that can perform photosynthesis. - **Green Leaf**: Starch will be present throughout the leaf since it is entirely green and can perform photosynthesis. 5. **Conclusion**: - Starch will be present in all the leaves where the green parts are exposed to light. Therefore, the correct answer is: **All the leaves in which green parts are exposed to light**. ### Final Answer: Presence of starch was seen in **all the leaves in which green parts are exposed to light**. ---
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