The detector of light during de-etiolation (greening) of a tomato plant is (are) ________.
A) carotenoids
B) xanthophylls
C) phytochrome
D) auxin

Question

Quizplus · Accepted Answer

The detector of light during de-etiolation (greening) of a tomato plant is phytochrome. Phytochrome is a photoreceptor that is sensitive to red and far-red light and plays a key role in regulating plant growth and development, including de-etiolation or greening. Carotenoids and xanthophylls are pigments that contribute to photosynthesis but are not directly involved in detecting light for de-etiolation. Auxin is a plant hormone that regulates plant growth and development but is not involved in detecting light.

The Detector of Light During De-Etiolation (Greening) of a Tomato