Question

diffrence between C3 and C4 pathways

Answer 1

C3 Plants: The plants exhibiting C3 pathway are called C3 plants. About 95% of the trees plants and shrubs on Earth are C3 plants.while
C4 Plants: The plants exhibiting C4 pathway are called C4 plants. C4 Plants live in hot moist or arid and nonsaline habitats. It occurs in Grasses, Sugar cane, Maize, Sorghum, Amarathus and Atriplex.
C3 pathway involves set of carbon reactions which are catalysed by the enzyme Rubisco to synthesise 3 carbon compound, 3-phosphoglycerate from 5-carbon compound, Ribulose bisphosphate. C4 pathway also involves carbon fixation to synthesise 4 carbon compound Oxaloacetic acid. C4 pathway occurs only in some plants to prevent loss of energy by photorespiration.

Answer 2

The plants exhibiting C3 pathway are called C3 plants. About 95% of the trees plants and shrubs on Earth are C3 plants it is also called calvin cycle.

1. It results in the synthesis of carbohydrates from CO₂

2. It depends on the light  reaction for the supply of the assimiatory power that is required for carbon assimilation.

3. It is the primary source of organic food & food energy for all the living organisms.