Read the following statements and choose the correct option: S1 -…

A reaction is endothermic when it absorbs energy from its surroundings to proceed, and exothermic when it releases energy into its surroundings as it proceeds.

Photosynthesis converts carbon dioxide and water into glucose and oxygen only with a continuous input of light energy, captured by chlorophyll and stored in the chemical bonds of glucose — this net absorption of energy makes it endothermic, confirming S1. Respiration breaks that glucose down using oxygen to release carbon dioxide, water, and the stored chemical energy as ATP — this net release of energy makes it exothermic, confirming S2.

This rules out the other combinations:

• Both statements false would require photosynthesis to release energy and respiration to absorb it — the reverse of how each process actually exchanges energy with its surroundings.

• S1 true and S2 false would require respiration to absorb energy rather than release the energy stored in glucose.

• S1 false and S2 true would require photosynthesis to release energy rather than absorb the light energy needed to build glucose.

Since both statements independently hold, the correct choice is the option stating both S1 and S2 are true.