ASSESS YOUR TOPICAL UNDERSTANDING

Why is there a decrease in the rate of photosynthesis at high light intensities?

Make a flowchart of all the steps involved in photosynthesis initiating from light harvesting mechanism.

Explain with reasons why very high concentration of ${\mathrm{CO}}_2$ inhibits photosynthesis.

Explain with reasons why very high temperature decreases the rate of photosynthesis.

Explain with reasons why ${\mathrm{C}}_4$ plants show another pathway of ${\mathrm{CO}}_2$ fixation in addition to ${\mathrm{C}}_3$ plants.

Explain with reasons why increase in ${\mathrm{O}}_2$ concentration inhibits photosynthesis.

Explain with reasons why ${\mathrm{C}}_4$ plants are more productive than ${\mathrm{C}}_3$ plants.

Explain with reasons why carotenoids protect chlorophylls.