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Photosynthesis in Higher Plants

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Biology

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Biology

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CBSE Gujarat Board Haryana Board

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Class 10 Class 12

Give comparison between the following :

(b) Cyclic and non-cyclic photophosphorylation

 


(b) Distinction between cyclic and non-cyclic photophosphorylation :

 

Cyclic photophosphorylation

Non-cyclic photophosphorylation

1.

It is performed by PS I independently.

It is performed by both PS I and PS II with the help of each other.

2.

An external source of electrons is not required because the same electrons get recycled.

The process requires an external electron donor, because the same electron is not recycled.

3.

It is not connected with photolysis of water, therefore, no oxygen is evolved.

It is connected with photolysis of water and liberation of oxygen.

4. 

It synthesizes only ATP.

ATP synthesis with the production of NADPH.

5

Electron flow is cyclic.

Electron flow is non-cyclic. 


 

457 Views

What are grana ?

Grana are the stacks of thylakoids embedded in the stroma of a chloroplast. They are the sites of light reaction of photosynthesis.
842 Views

Where CO2 assimilation occurs in CPlants ?

In bundle sheath cells.
766 Views

 What is stroma ?

Stroma is matrix or the cytoplasm of chloroplast where dark reaction of photosynthesis takes place.
783 Views

Why Rubisco is not affected by O2 in C4 plants ?

O2 is formed in mesophyll cells while Rubisco is present in bundle sheath cells. Therefore Rubisco does not come in contact with O2 and is thus not affected by it.
710 Views

Name the first stable compound formed in C3 cycle.

3-phosphoglyceric acid (PGA)
1606 Views