Question

P${}_{700}$ is a special form of pigment. which of the following is that pigment?

• A. Chlorophyll b
• B. Carotenes
• C. Chlorophyll a
• D. Phycobilins

Answer 1

The correct option is C Chlorophyll a

P-700 is the reaction centre of chlorophyll a molecule in association with photosystem I. Its absorption spectrum peak at 700 nm. When photosystem I absorb light, an electron is excited to a higher energy level in the P-700 chlorophyll.

So, the correct answer is option C.