Compensation point is

Look at leaves of the same plant on the shady side and compare them with the leaves on the sunny side. Or,compare the potted plants kept in the sunlight with those in the shade. Which of them has leaves that are darker green? Why?

If plants are given only visible light,their growth will:

The formation of chlorophyll in young plant seedlings is induced by .........

If half of the leaves of a plant are removed,the rate of photosynthesis would be

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.