C3 plants are so named because

Question

Accepted Answer

A. the first stable fixation product is 3-carbon (3-PGA)

C3 refers to the 3-carbon first stable product (3-phosphoglyceric acid, 3-PGA) of the Calvin cycle.
Crops like wheat and rice are C3. The 'C' counts carbons in the first stable product.
C4 plants are named the same way (first stable product is 4-carbon oxaloacetate).

Answer

they have exactly three chloroplasts per cell

Answer

they need three units of CO₂ to make one ATP

Answer

their leaves have three layers of mesophyll

C3 plants are so named because

Keep practising Photosynthesis in Higher Plants