What is the importance of respiration in plants?
Correct answer: B. It liberates energy
- A. It provides oxygen to plants
- B. It liberates energy
- C. It liberates carbon dioxide
- D. All the above
Explanation
The correct answer is B) It liberates energy. Respiration is crucial for breaking down glucose molecules to release energy, which plants need for vital functions like growth and reproduction. Option A is incorrect because respiration consumes rather than provides oxygen. Option C, while acknowledging the release of carbon dioxide, misses the primary goal of energy release. Option D is incorrect, as it implies all statements are equally important, whereas energy liberation is the primary function of respiration.
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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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