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Plant Growth And Development MCQ

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 NumberAnswer Key
14
22
31
42
53
61
74
82
91
102

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