NEETBiologyPhotosynthesis in Higher PlantsMCQ+4 / −1
In sugarcane plant 14CO2 is fixed to malic acid, in which the enzyme that fixes CO2 is
- Aribulose biphosphate carboxylase
- Bphosphoenal pyruvic acid carboxylase
- Cribulose phosphate kinase
- Dfructose phosphate.
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Correct answer: B
C4 pathway was first reported in members of Family Gramineae (grasses) like sugarcane, maize, sorghum, etc. In C4 plants, PEPCo (PEP carboxylase) is the key enzyme used to fix CO2 in C4 plants.Oxaloacetic acid is a 4-C compound and is the first stable product so this pathway is known as C4 cycle.
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