Answer the following in "Yes" or "No"

(i) All parts of a green plant carry out photosynthesis. Yes/No

(ii) Photosynthesis is the only biological process that releases oxygen into the air. Yes/No

(iii) Out of nine types of chlorophyll, chlorophyll a and b are most abundant. Yes/No

(iv) Too much light destroys chlorophyll. Yes/No

(v) No transpiration occurs during photosynthesis. Yes/No

(vi) During sunlight, the guard cells turn flaccid to open the stomata. Yes/No

(i) All parts of a green plant carry out photosynthesis: Yes

The green parts of the plant contain green pigment chlorophyll so in presence of sunlight using carbon dioxide and water it carries out photosynthesis process producing glucose and oxygen gas.

(ii) Photosynthesis is the only biological process that releases oxygen into the air: Yes

Photosynthesis is the biological process where cells containing chlorophyll in presence of sunlight using carbon dioxide and water produce glucose and oxygen gas is released into the atmosphere.

(iii) Out of nine types of chlorophyll, chlorophyll a and b are most abundant: Yes

Chlorophyll is the green colour pigment present in walls of thylakoids in cell organelle chloroplast. There are nine types of chlorophyll out of which chlorophyll a and b are most abundant and best known.

(iv) Too much light destroys chlorophyll: Yes

Chlorophyll is highly sensitive to light and formation of chlorophyll in light depends on the exposure of plant parts to sunlight. But too much of sunlight destroys chlorophyll.

(v) No transpiration occurs during photosynthesis: No

Transpiration occurs along with photosynthesis because during day time as stomata are open water is lost through stomata and this process is called transpiration. Transpiration is the price which plant pays for photosynthesis as during day time stomata are open to let in carbon dioxide which is required for photosynthesis and at the same time, water vapour is lost through this open stomata.

(vi) During sunlight, the guard cells turn flaccid to open the stomata: No

During day time in presence of sunlight chlorophyll containing guard cells prepare glucose by photosynthesis process and they turn turgid so that the stomata open. But during night time the guard cells turn flaccid closing the stomata.