Biology
Assertion. Guard cells regulate the opening and closing of the stomatal aperture.
Reason. Guard cells contain chloroplasts and are mostly located on the lower surface of the leaves. Other cells of the lower epidermis do not contain chloroplasts.
- Both A and R are True
- Both A and R are False
- A is True and R is False.
- A is False and R is True.
Photosynthesis
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Answer
Both A and R are True
Explanation
Guard cells are found in the lower portion of leaf and their function is to close and open the stomata as per need. They contain chloroplasts and carry out photosynthesis.
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Reason. Transpiration is the evaporative loss of water through the aerial parts (leaves, stems) of a plant. However, this loss holds much significance for the plant.
- Both A and R are True
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Reason. Chlorophyll is the green pigment which traps solar energy during daytime.
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- Both A and R are True
- Both A and R are False
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- Both A and R are True
- Both A and R are False
- A is True and R is False.
- A is False and R is True.