how photosynthesis work in a plants?

Answer 1

as a brief, water moves by osmosis from xylem to cells containing chloroplasts , where it enters those chloroplasts, and in the presence of light and CO2, glucose is formed, or some amino acids..

More explanation, what happens in the chloroplasts is as follows,
-- water splitting enzyme in photosystem 2 splits water into H and O and electrons are released, which passes to photosystem 1 to replace lost electrons lost by it, which ,the lost electrons, are used to reduce NADP into reduced NADP, and ATP is formed too when electrons pass by electron trasport chains.. all this happens on thylakoid membrane(thylakoid is found in chloroplasts)

-- ATP and reduced NADP move to stroma to help in CALVIN cycle, where an enzyme called RUBISCO catalyses the fixation of CO2 to a compound forming 2 pyruvate molecules, then it forms 2 triose phosphate, which some of it forms glucose and the remanings help to regenerate the original compound and the CALVIN cycle re works

if u want more specific details google it

Answer 2

Plants have special pigments, mainly chlorophyll, that can capture the energy from the sun and use it to combine water (H2O) and carbon dioxide (CO2) into sugar (C6H12O6).
Many people have done lots of research on the details, but your question is pretty open. There's a good introduction in the site below.

Answer 3

use the link it is very good
gives u all the good information

just remember the simplest thing is that it makes food for itself