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Question

C4 plants are more efficient in photosynthesis than C3 plants due to

A
Higher leaf area
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B
Presence of larger number of chloroplasts
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C
Presence of cuticle
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D
Lower rate of photorespiration
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Solution

The correct option is B Presence of larger number of chloroplasts

C4 plants are more efficient in photosynthesis than C3 plants but they use more energy. They possess a larger number of chloroplasts in the leaf cells.
In the leaves of C4 plants, the vascular bundles are surrounded by bundle sheath of larger parenchymatous cells, which in turn are surrounded by mesophyll cells.
Chloroplasts in bundle sheath cells are larger and always contain grana, whereas chloroplasts in mesopyll cells are smaller.


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