1
NEET 2026
MCQ (Single Correct Answer)
+4
-1
Change Language

Find the incorrect statement(s) about photosynthesis from the following:

A. The water splitting complex is associated with PSI.

B. $\mathrm{C}_4$ plants use the $\mathrm{C}_3$ pathway of $\mathrm{CO}_2$ fixation as the main biosynthetic pathway.

C. In $\mathrm{C}_4$ plants, photorespiration does not occur.

D. $\mathrm{C}_3$ plants exhibit 'Kranz' anatomy.

E. ATP synthesis in chloroplast occurs through chemiosmosis.

Choose the answer from the options given below:

A

B and C only

B

B only

C

B and E only

D

A and D only

2
NEET 2026
MCQ (Single Correct Answer)
+4
-1
Change Language

The enzyme required for carboxylation in the Calvin cycle is

A

Hexokinase

B

PEP carboxylase

C

RuBP carboxylase - oxygenase

D

Carboxypeptidase

3
NEET 2026
MCQ (Single Correct Answer)
+4
-1
Change Language

How many ATP and NADPH molecules are required to make one molecule of glucose through the Calvin pathway?

A

18 ATP and 12 NADPH

B

12 ATP and 18 NADPH

C

24 ATP and 18 NADPH

D

6 ATP and 12 NADPH

4
NEET 2025
MCQ (Single Correct Answer)
+4
-1
Change Language

Which of the following statements about RuBisCO is true?

A
It is an enzyme involved in the photolysis of water
B
It catalyzes the carboxylation of RuBP
C
It is active only in the dark
D
It has higher affinity for oxygen than carbon dioxide

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