Chlorophyll b is found along with chlorophyll a in:
Correct answer: B. Green plants and green algae only
- A. All photosynthetic plants, green algae, and cyanobacteria
- B. Green plants and green algae only
- C. Red algae and brown algae
- D. Photosynthetic bacteria such as purple and green sulfur bacteria
Explanation
Chlorophyll b is found only in green plants and green algae, where it works alongside chlorophyll a to absorb a wider range of light wavelengths for photosynthesis. It is absent in cyanobacteria, which have chlorophyll a and phycobilin pigments instead; in red and brown algae, which contain chlorophylls a, c, or d with other accessory pigments; and in photosynthetic bacteria, which use bacteriochlorophylls instead of chlorophylls a or b. Therefore, the correct answer is Option B: Green plants and green algae only.
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