Quantasomes are found in .....

Which one of the following is not an accessory pigment?

The extraction and separation of chlorophylls and carotenoids are performed by:

Bacteriochlorophyll differs from chlorophyll $a$ in having:

Suppose there were plants that had a high concentration of Chlorophyll-$b$,but lacked Chlorophyll-$a$. Would they carry out photosynthesis? Then why do plants have Chlorophyll-$b$ and other accessory pigments?

What can we conclude from the statement that the action and absorption spectrum of photosynthesis overlap? At which wavelengths do they show peaks?