Question

in each of the following sitiuations what will happen to the rate of photosynthesis:

a)cloudy days

b)no rainfall in the area

c)good manuring inthe area

d)stomata gets blocked due to dust

Answer 1

Rate of photosynthesis under the following conditions:

1) On cloudy day – Due to lack of light on cloudy day, the rate of photosynthesis decreases.

2) No rainfall in the area- Due to lack of water which is required by plants, the rate of photosynthesis decreases.

3) Good manuring in the area – If the soil has good amount of manure it becomes fertile. The good amount of humus is also made available to soil through manuring, then the soil is able to hold water which is required by plants. Thus, the rate of photosynthesis increases when good manuring is done.

4) Stomata get blocked due to dust- If the stomata present on the surface of leaves get blocked, the exchange of gases does not occur. So, carbon dioxide which is required by plants for performing photosynthesis is not made available to plants from surroundings. Thus, the rate of photosynthesis decreases when stomata get blocked due to dust.