Question

explain why rate of photosynthesis is low in both lower and higher temperature​

Answer 1

Answer:

The enzymes function within an optimum range of temperature which is neither very low nor very high. ... Again when the temperature is very high, the activity of enzymes decreases which leads to low rate of photosynthesis. (ii) Green light is least useful in photosynthesis, because chlorophyll does not absorb green light.

Answer 2

Answer:

when the temp. is low.....rate of transpiration decreases which decreases supply of water in return...thus rate of photosynthesis decreases

with increase in temp. rate of photosynthesis increases but only upto a certain limit....it starts decreasing when the temp. rises too mich