C4 plants use…….to react CO2 RuBP to produce PEP.
a) rubisco
b) pepco
c) pepsin
d) carboxylase
Explanation: PEP carboxylase or PEPcase (phosphoenolpyruvate carboxylase) is an enzyme involved in the C4 and CAM pathways of photosynthesis.
During C4 photosynthesis, phosphoenol pyruvate (PEP) is reduced to another molecule called……
a) fumerate
b) ketoglutarate
c) malate
d) oxalate
Explanation: the malate carries CO2 to the special type of cells called bundle sheath cells where Calvin cycle proceeds
In C3 plants, chloroplasts are present in ………cells.
a) epidermal cells
b) mesophyll cells
c) bundle sheath cells
d) cuticle cells
In C4 plants, chloroplasts are present in ………cells.
a) epidermal cells
b) mesophyll cells
c) bundle sheath cells
d) both b and c
In C4 plants, which of the following cells only fix CO2 by using pepco?
a) epidermal cells
b) mesophyll cells
c) bundle sheath cells
d) cuticle cells
In C4 plants, which of the following cells carry out Calvin cycle producing glucose?
a) bundle sheath cells
b) mesophyll cells
c) both a and b
d) none of them
