Plants appear green because:
Correct answer: B. They reflect green light
- A. They absorb green light
- B. They reflect green light
- C. They transmit all colours equally
- D. They absorb only yellow and green wavelengths
Explanation
Plants appear green because chlorophyll, the main pigment involved in photosynthesis, reflects green light while absorbing red and blue wavelengths from sunlight. The reflected green light is what reaches our eyes, giving plants their characteristic green color. Other pigments like carotenoids absorb different wavelengths, but chlorophyll's reflection of green remains dominant in most plants.
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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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