Transpiration ratio is the ratio of moles of ${H_2}O$ transpired to moles of $CO_2$ fixed. This ratio is a measure of:

What happens when the temperature increases above $35^{\circ}C$?

Identify the incorrect sentences:
$(I)$ Humidity in the atmosphere is relatively higher in areas where light becomes a limiting factor for plants.
$(II)$ An increase in light intensity beyond a certain point causes the breakdown of chlorophyll,leading to a decrease in the rate of photosynthesis.
$(III)$ $C_4$ plants respond to higher temperatures and show higher rates of photosynthesis,while $C_3$ plants have a much lower temperature optimum.

What is the relationship between habitat and temperature in the context of photosynthesis?

Which of the following statements is $NOT$ consistent regarding the factors affecting the rate of photosynthesis?

If a plant receives low-intensity light,then: