Question

Which of the following substances release two high energy electrons when light is shone on them. a) Carotenoids b) Chlorophyll A c) Antenna pigments d) Chlorophyll B

Answer 1

Answer - option b Chlorophyll A

Explanation -

During light reaction when sunlight falls on chloroplasts chlorophyll - A get excited and releases electrons these electrons are carried by different electron carriers and ultimately accepted by NADP+.

Chlorophyll B ,antennae pigments and carotenoids are accessory pigments which protect chlorophyll A from photo oxidation and transfer energy to chlorophyll A.