Respiration in Plants — Important Questions

Stomata in leaves, Lenticels in stem, General surface of roots

Plants obtain oxygen through three main inlets: stomata in leaves, lenticels in stems, and through the general surface of roots. Every part of the plant respires.

Respiration occurs in multiple steps, Burning occurs in a single step, Respiration is carried out by enzymes

Respiration differs from burning as it occurs in multiple enzymatic steps at body temperature, while burning is a single-step process at high temperature. Only burning produces light.

Glycolysis and Krebs cycle

The two major phases are glycolysis (glucose to pyruvate in cytoplasm) and Krebs cycle (pyruvate to CO₂ + H₂O + ATP in mitochondria).

To absorb carbon dioxide

Soda lime (mixture of sodium hydroxide and slaked lime) is used to absorb any carbon dioxide that might be present, ensuring accurate measurement of oxygen consumption.