The process which makes major difference between C3 and C4 plants is

  • Option 1)

    glycolysis

  • Option 2)

    Calvin cycle

  • Option 3)

    photorespiration

  • Option 4)

    respiration

 

Answers (1)

As learnt in

Photorespiration -

A process in plant metabolism where enzyme RuBisCO oxygenates RuBP, causing some of the energy produced by photosynthesis to be wasted.

- wherein

Oenters Calvin cycle instead of Co this results in reduced rate of photosynthesis.

 

 

 

Calvin cycle -

Involves CO2 fixation in the presence of ATP and NADPH and its conversion to glucose, through a series of reactions 

Net Reaction:

6RuBP+6CO2+18ATP+12NADPH\rightarrow 6RuBP+C_{6}H_{12}O_{6}+18ADP+18Pi+12NADP^{+}

- wherein

Discovered by Calvin and Benson. Divided into three phases:

1) Carborylation 

2) Glycolytic reversal 

3) Regeneration of RuBP

 

 

 

Hatch Slack pathway -

Regular mode of CO2 fixation in number of tropical plants. First product is 4-carbon compound, hence, known as C4

- wherein

 

 Photorespiration is present in C3 but almost absent in C4 plants.

 

 

 


Option 1)

glycolysis

Incorrect option

Option 2)

Calvin cycle

Incorrect option

Option 3)

photorespiration

Correct option

Option 4)

respiration

Incorrect option

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