Explore topic-wise MCQs in Life Sciences.

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

1.

Which of the following is NOT the long day plant?

A. Spring barley
B. Wheat
C. Spinach
D. Soybean
Answer» E.
Discussion
2.

Name the term which defines the ability of the plants to measure the length of photoperiods?

A. Phototropin
B. Photoperiodism
C. Cryptochrome
D. Gravitropism
Answer» C. Cryptochrome
Discussion
3.

Which of the following has a major role in the regulation of chloroplast movement?

A. Phototropin
B. Photoperiodism
C. Cryptochrome
D. Calcium
Answer» B. Photoperiodism
Discussion
4.

CRY 1 and CRY 2 are the nuclear protein of cryptochromes.

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

Which of the following is NOT the function of cytochromes?

A. Inhibition of stem elongation
B. Stimulation of leaf expansion
C. Seed germination
D. Regulation of floral initiation
Answer» D. Regulation of floral initiation
Discussion
6.

Name the blue light photoreceptor of the plant?

A. Photochrome
B. Cryptochrome
C. Phototropin
D. Vernalin
Answer» C. Phototropin
Discussion
7.

Which of the following does NOT belongs to the phytochrome gene family?

A. PHY B
B. PHY B
C. PHY C
D. PHY F
Answer» E.
Discussion
8.

Name the pigment, which is responsible for red color light?

A. Chlorophyll
B. Bilirubin
C. Chromophore
D. Xanthophyll
Answer» D. Xanthophyll
Discussion
9.

Name the red light sensitive system?

A. Phytochrome
B. Cryptochrome
C. Phototropin
D. Xanthophyll
Answer» B. Cryptochrome
Discussion
10.

Light dependent changes in plant s growth and development apart from photosynthesis is known as___________

A. Phytochrome
B. Dark reaction
C. Light reaction
D. Photomorphogenesis
Answer» E.
Discussion