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Which is the primary carbondioxide fixation product in C4 plants?

oxaloacetic acid

Which of the following best describes C4 plants like corn and sugar cane?

C4 plants like corn and sugar cane, evolved primarily in tropical regions where they grow faster and produce more carbohydrates than C3 plants living in the same environment. Both C4 and C3 plants use Rubisco to catalyze carbon fixation. In C3 plants, the enzyme Rubisco is found in the mesophyll cells.

What is the point of C4 plants?

Key points: C4​start text, C, end text, start subscript, 4, end subscript plants minimize photorespiration by separating initial CO2​start text, C, O, end text, start subscript, 2, end subscript fixation and the Calvin cycle in space, performing these steps in different cell types.

Why are C4 plants more efficient than C3?

C4 plants are more efficient than C3 due to their high rate of photosynthesis and reduced rate of photorespiration. The main enzyme of carbon fixation (Calvin cycle) is RuBisCO, i.e. ribulose bisphosphate carboxylase oxygenase.

Which is better C3 or C4 plants?

C3 plants are less efficient in Photosynthetic energy fixation. C4 plants are more efficient in photosynthesis. Photorespiration rate is very high in C3 plants. Photorespiration is altogether absent in C4 plants (if present very little).

What is the difference between C3 and C4 pathways?

C3 plants are defined as the plants that exhibit the C3 pathway. On the other hand, C4 plants are defined as the plants that use the C4 pathway or Hatch-slack pathway during the dark reaction. The leaves possess kranz anatomy, and the chloroplasts of these plants are dimorphic.

Which is the primary CO2 fixation product in C3 and C4 plants?

Hint: The primary acceptor in C3 plants is a five-carbon ketose sugar and in C4 plants, it is a three-carbon molecule. Complete answer: In the C3 cycle, carbon dioxide is reduced to form a first three carbon stable compound, 3-phosphoglyceric acid 3-PGA. 1.

Which is the primary carbon dioxide acceptor in C3 plants?

The primary CO2 acceptor of C3 and C4 plants is RuBP (Ribulose 1-5-bisphosphate) and PEP (Phosphoenolpyruvate), respectively.

What is the first product of CO2 fixation in C4 plants?


Which of the following is CO2 acceptor in C4 plant?

The primary CO2 acceptor in C4 plants is the 3-carbon molecule phosphoenol pyruvate (PEP).

Which is the first carbon dioxide acceptor enzyme in C4 plants?

The first carbon dioxide acceptor in C4-plants is Solution : InC4-plants, phosphoenol-pyruavate is the first acceptor of CO2 while ribulose bi-phosphate is the second acceptor. Oxalo acetic acid (OAA) is the first product of C4-cycle.

Which is the first CO2 acceptor enzyme in C4 plant?

The primary acceptor of CO2, is a 3 carbon compound phosphoenol pyruvic acid. Addition of CO2, to any compound is called carboxylation. In C4 cycle, CO2, combines with phosphoenol pyruvic acid to form oxaloacetic acid. The enzyme is phosphoenol pyruvate carboxylase (PEPCo).

In which plants double fixation of CO2 occurs?

Sugarcane, Maize, Sorghum, Corn, etc. are the examples of these plants. In these plants, double fixation of carbon dioxide occurs by C4 pathway. The first CO2 acceptor is a three-carbon molecule phosphoenolpyruvate (PEP) and it is present in mesophyll cells.

What is primary acceptor of CO2?

The primary carbon dioxide acceptor in the dark reaction is Ribulose 1,5 bisphosphate or RUBP, which is carboxylated by the enzyme Ribulose 1,5 bisphosphate carboxylase oxygenase or RuBisCo.