Question

level 5
q4
what pigment molecule in plants absorb blue
and green light, making leaves appear yellow,
red and orange?
a. melanin
b. chlorophyll
c. carotenoid
d. anthocyanin

a. melanin

b. chlorophyll

c. carotenoid

d. anthrocyanin

Explanation:

• Option A: Melanin is a pigment in animals (like skin, hair) for protection, not in plants for this role.
• Option B: Chlorophyll absorbs red and blue - violet light, reflects green, making leaves green, so not the answer.
• Option C: Carotenoids absorb blue and green light, and reflect yellow, red, orange light, matching the description.
• Option D: Anthocyanins are responsible for red, purple, blue colors in plants (like flowers, fruits), not for the yellow - orange leaf colors from absorbing blue/green.

Answer:

C. Carotenoid