Question

1. Name the organelles in which photosynthesis and respiration occurs ?
2. The first step of photosynthesis is:
3. How does diaphragm help in inspiration?
4. What ishotolysis of water?

Answer 1

1.chloroplast

2.activation of cholorphyll

3.during inspiration,air pressure inside lungs decreases.
so diaphragm expands.
as air pressure decreases,there is like vacuum of air
so to fill the space,we inhale.

4.Photolysis of water is the breakdown of water by light energy (photons) to form H+ and O2..
H2O ---> 2H+ +1/2O2+ 2electrons
This happens in the green leaves of the plant.. The electrons are further used up by the plant for some cycles called photophosphoralyzation.. O2 is released out and H+ is also used up..