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.

Statement A: The process of absorption of minerals is divided into 2 phases.
Statement B: One phase of absorption is passive while the other is active.

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
2.

Mineral ions are exported from older parts to younger parts of plant before leaf fall.

A. True
B. False
Answer» B. False
Discussion
3.

Statement A: The outward movement is influx.
Statement B: The inward movement is efflux.

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
4.

Statement A: Minerals are present in the soil in the form of charged particles.
Statement B: Concentration of minerals is lower in root than in soil.

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
5.

Which of the following elements do not get translocated to younger parts?

A. N
B. P
C. K
D. Ca
Answer» E.
Discussion
6.

The translocation of mineral elements through the phloem is observed by radioisotope methods.

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

Minerals are transported through _________ along the _________ stream of water.

A. xylem, descending
B. phloem, descending
C. xylem, ascending
D. phloem, ascending
Answer» D. phloem, ascending
Discussion
8.

Which of the following is not a function of soil?

A. It holds water
B. It supplies air to roots
C. It acts as a matrix that destabilizes the plant
D. It harbors nitrogen fixing bacteria
Answer» D. It harbors nitrogen fixing bacteria
Discussion
9.

Which of the following statements if wrong about manganese toxicity?

A. Appearance of brown spots surrounded by chlorotic veins
B. Deficiency of Iron
C. Deficiency of Calcium
D. Excess of Magnesium
Answer» E.
Discussion
10.

Any mineral ion concentration that reduces that dry wt. of tissues by 10% is called as ___________

A. critical concentration
B. toxic concentration
C. beneficial concentration
D. optimum concentration
Answer» C. beneficial concentration
Discussion