Question

5. Choose the incorrect statements regarding the events of photosynthesis . I. Light energy is absorbed by chlorophyll molecules. IL Conversion of light energy to chemical energy and splitting of carbon dioxide into carbohydntes and oxygen IIL Carbon dioxide is reduced into carbohydrates. IV. Conversion of chemical energy to radiant energy and splitting of water molecules into hydrogen and oxygen​

Answer 1

Explanation:

Colour of objects

Red light is the only light that is reflected from the shirt. If only blue light is shone onto a red shirt, the shirt would appear black, because the blue would be absorbed and there would be no red light to be reflected. White objects appear white because they reflect all colours

Answer 2

Incorrect statements are II and IV .

Explanation:

• Photosynthesis take place in chloroplast in which chlorophyll molecule act as a photosynthetic pigment that absorb light energy.
• By using Light energy , chloroplast form ATP and NADPH. ATP is a source of chemical energy. In this way light energy is converted into chemical energy.
• At carbon fixation step of  photosynthesis, ATP and NADPH is used to reduce carbon di oxide into glyceraldehyde-3-phosphate(triose phosphate).  Triose phosphate is used to form glucose. thus Carbon di oxide is reduced into carbohydrates.
• Thus glucose is formed from carbon di oxide.
• In photosynthesis, H2O acts as an electron donor. Splitting of water molecules yield hydrogen ions and oxygen.
• Option 2 is incorrect because it says that splitting of carbon di oxide into carbohydrates and oxygen. actually carbon of carbon di oxide is fixed in carbohydrate and splitting of water into oxygen occur.
• option 4 is incorrect because it says that conversion of chemical energy to radiant energy. Actually in photosynthesis light energy is converted into chemical energy i.e. ATP.