Water vapors exit and carbon dioxide enters a leaf through:
Correct answer: A. Stomata
- A. Stomata
- B. Grana
- C. Porphyrin ring
- D. Photons
Explanation
Stomata are small pores found on the surface of plant leaves and stems. They regulate gas exchange, allowing water vapor to exit the leaf during transpiration and enabling the entry of carbon dioxide for photosynthesis.
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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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