Question

Energy transfer in photosynthesis occurs as:

• A. Phycoerythrin $\to$ Phycocyanin $\to$ Carotenoid $\to$ Chlorophyll a
• B. Chlorophyll b $\to$ Carotenoid $\to$ Phycoerythrin $\to$ Chlorophyll a
• C. Phycocyanin $\to$ Phycoerythrin $\to$ Carotenoid $\to$ Chlorophyll a
• D. Chlorophyll b $\to$ Carotenoid $\to$ Phycocyanin $\to$ Chlorophyll a

Answer 1

Answer: (A)

Chlorophyll is the principal pigment involved in photosynthesis. Chlorophyll ' $a$ ' is the major pigment involved in trapping light energy and converting it into electrical and chemical energy. Chlorophyll ' $b$ ' molecules also acts as accessory pigment. Other accessory pigments are phycoerythrin, phycocyanin, carotenoids etc. The accessory pigment and reaction centre together form photo-system.