Which of the following is the non-polar part of chlorophyll?

Quantasomes are found in .....

Which one of the following is not an accessory pigment?

If chlorophyll is burnt,which element will be left as the residue?

$A$: Carotenoids protect plants from excessive heat and prevent photooxidation of chlorophyll.
$R$: Carotenoids enable a wider range of wavelengths of incoming light to be utilized for photosynthesis.

Which of the following absorbs light energy for photosynthesis?