Question

explain C3 & C4 pathway?​

Answer 1

In C4 photosynthesis, where a four-carbon compound is produced, unique leaf anatomy allows carbon dioxide to concentrate in 'bundle sheath' cells around Rubisco. ... C3 plants do not have the anatomic structure (no bundle sheath cells) nor the abundance of PEP carboxylase to avoid photorespiration like C4 plants.

Answer 2

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C3 plants are defined as the plants that exhibit the C3 pathway. These plants use the Calvin cycle in the dark reaction of photosynthesis. The leaves of C3 plants do not show kranz anatomy. On the other hand, C4 plants are defined as the plants that use the C4 pathway or pathway during the dark reaction.