Question

which is the main light-absorbing pigment for photosynthesis?
○ carotene
○ chlorophyll
○ hemoglobin
○ anthocyanin

Explanation:

• Carotene is an accessory pigment in photosynthesis, not the main one.
• Chlorophyll (especially chlorophyll a) is the primary pigment that absorbs light (mainly red and blue - violet wavelengths) and initiates the light - dependent reactions of photosynthesis.
• Hemoglobin is a protein in red blood cells that transports oxygen in animals, not related to photosynthesis.
• Anthocyanin is a pigment that gives color (like red, purple) to flowers and fruits, not involved in the main light - absorbing process of photosynthesis.

Answer:

chlorophyll