Question

Question 6 Why is the colour of a leaf kept in the dark frequently yellow, or pale green? Which pigment do you think is more stable?

Class XI Biology Chapter - Photosynthesis in Higher Plants Page 225

Answer 1

green and yellow colours have less frequency then red. this answer is 10 th class we have

Answer 2

Answer:

Chlorophyll fails to absorb the energy in the absence of light; hence it loses stability to give the leaf yellow colouration.

This proves that carotenoids which imparts yellow color is more stable.