Question

factors affecting photosynthesis and describe them briefly

Answer 1

Factors affecting photosynthesis

Three factors can limit the speed of photosynthesis: light intensity, carbon dioxide concentration and temperature.



Light intensity

Without enough light, a plant cannot photosynthesise very quickly, even if there is plenty of water and carbon dioxide. Increasing the light intensity will boost the speed of photosynthesis.



Carbon dioxide concentration

Sometimes photosynthesis is limited by the concentration of carbon dioxide in the air. Even if there is plenty of light, a plant cannot photosynthesise if there is insufficient carbon dioxide.



Temperature

If it gets too cold, the rate of photosynthesis will decrease. Plants cannot photosynthesise if it gets too hot.

If you plot the rate of photosynthesis against the levels of these three limiting factors, you get graphs like the ones above.

In practice, any one of these factors could limit the rate of photosynthesis.

Answer 2

Caron dioxide and water are converted into plant food and oxygen with the help of chlorophyll and sunlight. Besides these two factors, there are other factors such as carbon dioxide, pH levels, light intensity, andtemperature that affect photosynthesis. 2.Theintensity of light affects the rate of photosynthesis.