MCQs on Plant Growth and Development

MCQs on Plant Growth and Development

1. Coconut milk contains a cytokinin called ____ which promotes plant growth.
1. Naphthalene acetic acid
2. Indole-3-acetic acid
3. Gelatin
4. Zeatin

2. One of the following is not an auxin
1. Indole-3-acetic acid
2. Malic Hydrazide
3. Indole butyric acid
4. Naphthalene acetic acid

3. _________can stimulate the germination of barley seeds
1. α-amylase
2. Abscisic acid
3. Benzoic acid
4. Coumarin

4. Seed dormancy is triggered by
1. Indole-3-ethanol
2. Abscisic acid
3. Carbon dioxide
4. None of the above

5. The significance of the day length in plants was first shown in:
1. Barley
2. Lettuce
3. Tobacco
4. Tomato

6. Uneven distribution of auxins may lead to
1. Phototrophic curvature
2. Day-neutral curvature
3. Both (1) and (2)
4. None of the above

7. Tendrils of garden peas coiling around any support signifies:
1. Seismonasty
2. Thigmotaxis
3. Gravitropism
4. Thigmotrophism

8. ____________ tissues synthesize natural cytokinins
1. Old
2. Rapidly dividing
3. Storage
4. None of the above

9. ________ is a plant hormone generally present in the gaseous state
1. Ethylene
2. Ethane
3. Argon
4. None of the above

10. _________ is a colourless gas that serves as a signalling hormone.
1. Benzene
2. Nitric Oxide
3. Ozone
4. None of the above

Answer Keys for Plant Growth And Development MCQ
Question Number Answer Key
1 4
2 2
3 1
4 2
5 3
6 1
7 4
8 2
9 1
10 2