Question

the primary photosynthetic pigment is
multiple choice
chlorophyll
phycobilin
phaeophytin
xanthophyll

Explanation:

Chlorophyll is the primary pigment in photosynthesis. It absorbs light energy (especially in the red and blue regions of the spectrum) and uses it to convert carbon dioxide and water into glucose and oxygen. Phycobilin is an accessory pigment in some algae. Phaeophytin is a molecule involved in the early stages of the light - dependent reactions (it accepts electrons from chlorophyll). Xanthophyll is a carotenoid (an accessory pigment) that can absorb light energy and also has a role in photoprotection (protecting the plant from excessive light damage). Since the question asks for the primary photosynthetic pigment, chlorophyll fits this role.

Answer:

chlorophyll