Explore topic-wise MCQs in Biology.

This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.

1.

How many electrons and protons are produced during the photolysis of water?

A. 4 electrons and 3 protons
B. 1 electron and 2 protons
C. 3 electrons and protons
D. 4 electrons and 4 protons
Answer» E.
Discussion
2.

Which of the following is most sensitive to higher wavelengths of sunlight?

A. Photolysis
B. Chlorophyll
C. PS I
D. PS II
Answer» D. PS II
Discussion
3.

______ discovered the two-pigment system theory of light reaction?

A. Emerson
B. Hill
C. Arnon
D. Mathew
Answer» B. Hill
Discussion
4.

Which among the following are raw materials required for the light reaction?

A. NADPH2 and H2O
B. ADP and OH2
C. ATP only
D. ADP, H2O, and NADP
Answer» E.
Discussion
5.

PS I is the photosystem present only in _______ photosynthesis.

A. Amoeba
B. Bacterial
C. Fungal
D. Plant
Answer» C. Fungal
Discussion
6.

The reaction center is different in both the photosystems.

A. True
B. False
Answer» B. False
Discussion
7.

Which pigment is absent in each photosystem?

A. One molecule of chlorophyll a
B. Two molecules of chlorophyll b
C. One molecule of chlorophyll b
D. One molecule of xanthophyll
Answer» B. Two molecules of chlorophyll b
Discussion
8.

The harvesting systems are named in the order of their functioning sequence.

A. True
B. False
Answer» C.
Discussion
9.

How many light-harvesting systems are there in light reaction?

A. Two
B. One
C. Three
D. Four
Answer» B. One
Discussion
10.

Which of the following is not related to the light reaction?

A. Also called Photochemical phase
B. Light absorption
C. Electron transport
D. Water splitting
Answer» D. Water splitting
Discussion
11.

The reaction center in the light-harvesting complex is formed by _____

A. Chlorophyll b
B. Grana
C. Chlorophyll e
D. A single chlorophyll a molecule
Answer» E.
Discussion