1. Site of Photosynthesis.
2. Most of the Absorption occurs in which part of the small intestine.
3. Site of complete digestion. (specific part of small intestine)

Site of Photosynthesis:-
Chloroplasts
In plants, photosynthesis takes place in chloroplasts, which contain the chlorophyll. Chloroplasts are surrounded by a double membrane and contain a third inner membrane, called the thylakoid membrane, that forms long folds within the organelle.

Most of the Absorption occurs in which part of the small intestine:-
Absorption of the majority of nutrients takes place in the jejunum, with the following notable exceptions: Iron is absorbed in the duodenum. Vitamin B12 and bile salts are absorbed in the terminal ileum. Water and lipids are absorbed by passive diffusion throughout the small intestine.

Site of complete digestion:-
The duodenum is the first section of the small intestine and is the shortest part of the small intestine. It is where most chemical digestion using enzymes takes place. 
 

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