NEET BIOLOGY

Detailed explanation-1: -In the light-dependent reactions, which take place on a membrane inside the chloroplast, chlorophyll absorbs energy from sunlight and then converts it into chemical energy with the use of water. The light-dependent reactions release oxygen from the hydrolysis of water as a byproduct.

Detailed explanation-2: -The photon causes an electron in the chlorophyll to become “excited.” The energy given to the electron allows it to break free from an atom of the chlorophyll molecule. Chlorophyll is therefore said to “donate” an electron (Figure 5.12). To replace the electron in the chlorophyll, a molecule of water is split.

Detailed explanation-3: -In photosynthesis, a light-dependent reaction uses light energy from the sun to split water which has been taken in by the organism. Water, when split, gives oxygen, hydrogen, and electrons. These electrons move through structures in chloroplasts and, by chemiosmosis, make ATP.

Detailed explanation-4: -1 Answer. Water is split during the light reaction to form oxygen ( O2 ) and Hydrogen ions ( H+ ).

Detailed explanation-5: -Oxygen gas diffuses from the organism as a waste product. Therefore, it is necessary to split water molecules to create hydrogen, electrons, and oxygen which are further used in ATP formation.