Respiration in Plants – Notes

Respiration in Plants
Respiration provides oxygen, which is used for the oxidation of food to provide energy.
Plants respire through small openings called the stomata on leaves and lenticels on stems and roots.
Cellular respiration involves breakdown of the C-C bonds of compounds of food. It takes place in the cytoplasm and mitochondria.
Most of the energy released during oxidation is used for synthesising ATP.
Aerobic respiration involves the oxidation of food in the presence of oxygen.
Anaerobic respiration involves the oxidation of food in the absence of oxygen.

Glycolysis
Cells derive energy by the breakdown of nutrients.
The energy released is trapped as adenosine tri phosphate or ATP.
ATP is called the energy currency of the cell.
Enzymes catalyse biochemical reactions.
Glycolysis is a ten-step process involving breakdown of glucose to pyruvate. It takes place in the cytoplasm of cells.
The net gain of glycolysis is 2ATP and 2 NADH₂ .