In all plants, the major sites of photosynthesis are:
Correct answer: A. Leaf.
- A. Leaf.
- B. Stems
- C. Roots
- D. Branches
Explanation
The correct answer is 'Leaf'. In most plants, leaves are the primary sites for photosynthesis. They possess mesophyll cells filled with chloroplasts, which contain chlorophyll to capture sunlight and convert it into chemical energy. This process mainly occurs in the leaves because they are structured to maximize light absorption. Stems, roots, and branches, while essential for other functions such as support, transport, and nutrient absorption, do not have the necessary chloroplasts to perform photosynthesis effectively.
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About Bioenergetics
Cellular respiration explains how cells release energy from glucose through glycolysis, the link reaction, Krebs cycle and electron transport chain. It includes ATP production, substrate-level and oxidative phosphorylation, aerobic versus anaerobic respiration, and the roles of mitochondria, oxygen and fermentation in energy transfer.
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