Cyclic photophosphorylation invloves

(1) PS I

(2) PS II

(3) PS I and PS II

(4) P680

Subtopic:  Light Reactions :2 | Light Reactions :3 | Light Reactions |
 79%
From NCERT
AIIMS - 2010
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The first stable product of Calvin cycle is 

(1) 3-phosphoglycerate

(2) 1, 3 biphosphoglycerate

(3) glyceraldehyde - 3 phosphate

(4) ribulose - 5- phosphate

Subtopic:  Dark Reaction : Calvin Cycle | Questions on Calvin Cycle |
 82%
From NCERT
AIIMS - 2010
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PS-II occurs only in

(1) stroma

(2) granal thylakoids

(3) stromal lamella

(4) matrix

Subtopic:  Photosystems |
 73%
From NCERT
AIIMS - 2011
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Which of the following statements is correct?

(1) Photorespiration is useful process.

(2) C4 plants are more efficient than C3 plants.

(3) C4 plants are less efficient than C3 plants.

(4) Photorespiration is absent in C3 plants but present in C4 plants. 

Subtopic:  Photorespiration | Questions on Photorespiration |
 90%
From NCERT
AIIMS - 2011
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Photorespiration shows formation of 

1. sugar but not ATP

2. ATP but not sugar

3. both ATP and sugar

4. neither ATP nor sugar.

Subtopic:  Photorespiration |
 76%
From NCERT
AIIMS - 2012
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Kranz anatomy is usually associated with 

(1) C3 plants

(2) C4 plants

(3) CAM plants

(4) C3-C4 intermediate plants.

Subtopic:  C4 Plants Examples | Question on C4 Pathway |
 92%
From NCERT
AIIMS - 2012
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C4 plants have better productivity because 

(1) C4 plants absorb more light

(2) C4 plants absorb more CO2

(3) C4 plants does not carry photorespiration

(4) C4 plants have more amount of RuBisCO.

 

Subtopic:  C4 Plants Examples | Question on C4 Pathway |
 84%
From NCERT
AIIMS - 2013
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The first carbon dioxide fixation product of C4 plant is 

(1) Oxaloacetic acid

(2) ribulose biphosphate

(3) phosphoenol pyruvate

(4) phosphoglyceric acid.

Subtopic:  C4 Cycle (Hatch & Slack Pathway) |
 80%
From NCERT
AIIMS - 2015
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Carbon dioxide is necessary for photosynthesis. The chemical used to remove this gas most effectively from entering a control apparatus is 

(1) calcium oxide

(2) distilled water

(3) potassium hydroxide solution

(4) sodium carbonate.

Subtopic:  Historical View: Experiments |
 86%
From NCERT
AIIMS - 2015
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Photosynthesis in C4 plants is relatively less limited by atmospheric CO2 levels because 

(1) there is effective pumping of CO2 into bundle sheath cells

(2) RuBisCO in C4 plants has higher affinity for CO2

(3) six carbon acids are the primary initial CO2 fixation products

(4) the primary fixation of CO2 is mediated via PEP carboxylase.

Subtopic:  Dark Reaction: Biosynthetic Phase |
AIIMS - 2016
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