Solution:
In the absence of light, chlorophyll fails to absorb energy and hence loses stability, resulting in the yellow coloration of the leaf. This demonstrates that carotenoids, which are responsible for the yellow colour, are more stable.
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?
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?