Plants synthesize their own food through photosynthesis and hence are called autotrophs.
Photosynthesis is important since it is the primary source of food for all living entities on earth and it releases oxygen in the atmosphere which we inhale to breathe.
It takes place in chloroplasts through light and dark reactions using 4 pigments- Chlorophyll a, chlorophyll b, Xanthophyll, carotenoids. Extracting energy from oxidizable substances and storing in the form of bond energy is phosphorylation.
In plants, cyclic and non-cyclic photo-phosphorylations take place. During photosynthesis, the Calvin cycle takes place through a set of 4 chemical reactions.
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