RESPIRATION IN PLANTS

RESPIRATION IN PLANTS

In plants respiration takes place through various parts of the plants.
(a)RESPIRATION IN LEAVES :

In leaves respiration takes place through stomata.
In plants respiration in the leaves takes place during the day time as well as night

• During day time oxygen is produced by the process photosynthesis. Some of the oxygen produced is used in respiration and rest of the oxygen is diffuses into atmosphere by the process diffusion. Also the CO2 produced by respiration is used in photosynthesis.
• At night time, when no photosynthesis takes place, plants use oxygen present in atmosphere for respiration and release considerable amount of CO2 in atmosphere.

(b)RESPIRATION IN STEM:

Herbaceous plants stem respire through stomata and woody plants respire through lenticels.
(c)RESPIRATION IN ROOTS:

As we know air is present in between the particles of the soil. The roots of the plants takes the oxygen from the air present between these soil particles by the process diffusion.

ANSWERS THE FOLLOWING QUESTIONS…

1. In leaves respiration takes place through………………

2. what is the role of lenticels in woody plants?

3. The roots of the plants absorb oxygen from soil by the process……..

4. Why photosynthesis does not takes place at night ?