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.

The hormone responsible for flowering is ________

A. vernalin
B. cytokinin
C. ABA
D. florigen
Answer» E.
Discussion
2.

Which is the site for perception of light/dark duration?

A. Leaves
B. Stem
C. Roots
D. Apical bud
Answer» B. Stem
Discussion
3.

Statement A: Response of plants to low temperature is regulated by a hypothetical hormone.
Statement B: Response of plants to different periods of light is also regulated by a hypothetical hormone.

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.

Duration of light period is more important than the duration of dark period.

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

Statement A: Vernalisation prevents precocious reproductive development.
Statement B: Vernalisation promotes flowering by cold treatment.

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
6.

Statement A: Short day plants required more exposure to light than the critical duration.
Statement B: Long day plants required less exposure to light than the critical duration.

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
7.

Which of the following plants is a polycarpic plant?

A. Sugarbeet
B. Cabbage
C. Carrots
D. Apple
Answer» E.
Discussion
8.

Statement A: Critical duration is different for different plants.
Statement B: The plants which are dependent on critical duration are called day-neutral 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» D. Statement B is true but Statement A is false
Discussion
9.

Plants are able to measure the duration of exposure to light.

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

Which of the crops doesn t show vernalisation?

A. Wheat
B. Barley
C. Rice
D. Rye
Answer» D. Rye
Discussion