Explore topic-wise MCQs in Biology.

This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.

1.

Amides are transported to other parts of the plant through ________

A. phloem parenchyma
B. phloem companion cells
C. xylem vessels
D. phloem fibre
Answer» D. phloem fibre
Discussion
2.

Which enzyme catalyses the process of transamination?

A. Lipase
B. Nitrogenase
C. Transaminase
D. Glutamate dehydrogenase
Answer» D. Glutamate dehydrogenase
Discussion
3.

Statement A: In reductive amination, NH4+ reacts with -ketoglutaric acid to form asparagine.
Statement B: The process takes place in presence of glutamate dehydrogenase.

A. Both the statements are true
B. Both the statements are false
C. Statement A is true but Statement B is false
D. Statement B is true but Statement A is false
Answer» E.
Discussion
4.

Leg-haemoglobin protects nitrogenase enzyme from anaerobic conditions.

A. True
B. False
Answer» C.
Discussion
5.

Statement A: Nodule that arises from root hair cells contains enzyme nitrogenase.
Statement B: The nodule gets it pink color from nitrogenase.

A. Both the statements are true
B. Both the statements are false
C. Statement A is true but Statement B is false
D. Statement B is true but Statement A is false
Answer» D. Statement B is true but Statement A is false
Discussion
6.

Statement A: At physiological pH, NH3 is protonated to form NH4+ ion.
Statement B: The NH4+ ion is further converted to another form in order to be accumulated.

A. Both the statements are true
B. Both the statements are false
C. Statement A is true but Statement B is false
D. Statement B is true but Statement A is false
Answer» B. Both the statements are false
Discussion
7.

Which microbe is capable of fixing nitrogen in non-leguminous plants?

A. Bacillus
B. Beijernickia
C. Anabaena
D. Frankia
Answer» E.
Discussion
8.

Statement A: Nitrogenase is a Cu-Mn protein.
Statement B: It catalyses the conversion of atmospheric nitrogen to the form absorbed directly by plants.

A. Both the statements are true
B. Both the statements are false
C. Statement A is true but Statement B is false
D. Statement B is true but Statement A is false
Answer» C. Statement A is true but Statement B is false
Discussion
9.

The bacteria have to modify into rod- shaped bacterium in order to initiate division of inner cortical and pericycle cells.

A. True
B. False
Answer» B. False
Discussion
10.

N2 + A e + A H+ + B ATP C NH3+ H2 + D ADP + D Pi
In the equation given above, C is present in how much quantity?

A. 8
B. 16
C. 2
D. 1
Answer» D. 1
Discussion