SELECT * FROM question_mgmt as q WHERE id=317 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=2 AND subId=7 AND chapterId=16 and ex_no='1' AND status=1 ORDER BY CAST(question_no AS UNSIGNED) CBSE Free NCERT Solution of 11th biology Photosynthasis in Higher Plants give comparison between the following a c3 and

Question: Give comparison between the following:
(a) C3 and C4 pathways
(b) Cyclic and non-cyclic photophosphorylation
(c) Anatomy of leaf in C3 and C4 plants

Answer:

(a) C3 and C4 pathways

C3 pathways

C4 pathways

1.

The primary acceptor of CO2 is RUBP – a six-carbon compound.

1.

The primary acceptor of CO2 is phosphoenol pyruvate – a three-carbon compound.

2.

The first stable product is 3-phosphoglycerate.

2.

The first stable product is oxaloacetic acid.

3.

It occurs only in the mesophyll cells of the leaves.

3.

It occurs in the mesophyll and bundle-sheath cells of the leaves.

4.

It is a slower process of carbon fixation and photo-respiratory losses are high.

4.

It is a faster process of carbon fixation and photo-respiratory losses are low.

(b) Cyclic and non-cyclic photophosphorylations

Cyclic photophosphorylation

Non-cyclic photophosphorylation

1.

It occurs only in photosystem I.

1.

It occurs in photosystems I and II.

2.

It involves only the synthesis of ATP.

2.

It involves the synthesis of ATP and NADPH2.

3.

In this process, photolysis of water does not occur. Therefore, oxygen is not produced.

3.

In this process, photolysis of water takes place and oxygen is liberated.

4.

In this process, electrons move in a closed circle.

4.

In this process, electrons do not move in a closed circle.

(c) Anatomy of the leaves in C3 and C4 plants

C3 leaves

C4 leaves

1.

Bundle-sheath cells are absent

1.

Bundle-sheath cells are present

2.

RuBisCo is present in the mesophyll cells.

2.

RuBisCo is present in the bundle-sheath cells.

3.

The first stable compound produced is 3-phosphoglycerate –a three-carbon compound.

3.

The first stable compound produced is oxaloacetic acid – a four-carbon compound.

4.

Photorespiration occurs

4.

Photorespiration does not occur

 


< Previous Question

Next Question >

SELECT ex_no,question,question_no,id,chapter FROM question_mgmt as q WHERE courseId='2' AND subId='7' AND ex_no!=0 AND status=1 and id!=317 ORDER BY views desc, last_viewed_on desc limit 0,10

  • Popular questions of class 11 Biology

SELECT ex_no,question,question_no,id,chapter FROM question_mgmt as q WHERE courseId='2' AND subId='7' AND ex_no!=0 AND status=1 and id!=317 ORDER BY last_viewed_on desc limit 0,10

  • Recently Viewed Questions of Class 11 Biology

Comments

  • Answered by Ekta Mehta
  • 4 months ago

Taking Screenshots on your Samsung Galaxy M31s is very easy and quick.

  • Answered by Ekta Mehta
  • 4 months ago

Taking Screenshots on your Samsung Galaxy M31s is very easy and quick.

  • Answered by Ekta Mehta
  • 4 months ago

Taking Screenshots on your Samsung Galaxy M31s is very easy and quick.

Comment(s) on this Question


NCERT Solutions

Quick Links

Resources

Support