Question

The major pigment responsible for photosynthesis in plants is:

• A. Chlorophyll A
• B. Chlorophyll B
• C. Carotenoids
• D. Phycobilins

Hint:

Remember the important pigments: \[ \boxed{\text{Primary pigment} \rightarrow \text{Chlorophyll a}} \] \[ \boxed{\text{Accessory pigments} \rightarrow \text{Chlorophyll b, Carotenoids, Xanthophylls}} \] Only chlorophyll a directly participates in the photochemical reactions of photosynthesis.

Answer 1

The Correct Option is A

Chlorophyll a is the primary (major) photosynthetic pigment present in all photosynthetic organisms; it absorbs light maximally at approximately 430 nm (blue-violet) and 662 nm (red). All other pigments such as chlorophyll b, carotenoids, and xanthophylls are accessory pigments that transfer absorbed energy to chlorophyll a for use in photochemical reactions.