Question

1. C3 and C4 plants get their classification from the number of carbons in the first detectable product of carbon dioxide fixation. The C3 product is ________, whereas the C4 product is ________.

1. glycerol; malate
2. triose phosphate; oxaloacetate
3. 3-phosphoglycerate; malate
4. ribose; phosphoenolpyruvate
5. 3-phosphoglycerate; oxaloacetate

Answer 1

Answer:option e

3 phosphoglycerate,oxaloacetate.

C3 pathway contain three steps: carboxylation, reduction, and regeneration.first stable product is known as 3-phosphoglycerate.

In C4 plant initial carbon fixation takes place in mesophyll cells and the Calvin cycle takes place in bundle-sheath cells. PEP carboxylase is an enzyme that attaches an incoming carbon dioxide molecul to the three-carbon molecule known as phosphoenolpyruvate(PEP) that producing a resultant product known as oxaloacetate which is a four-carbon molecule.