Plant Growth and Development MCQ Questions & Answers in Botany

51. Movement of auxin is

A centripetal

B basipetal

C acropetal

D both B and C

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52. Drosera tentacles shows

A Chemonasty

B Thigmonasty

C Chemotropism

D Both A and B

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53. A few normal seedlings of tomato were kept in a dark room. After a few days they were found to have become white-coloured like albinos. Which of the following terms will you use to describe them?

A Mutated

B Embolised

C Etiolated

D Defoliated

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54. Why in vivipary an undersirable character for annual crop plants

A It reduces vigour of the plant

B The seeds cannot be stored under normal conditions for the next season.

C The seeds cannot exhibit long dormancy

D It adversely affects the fertility of the plant

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55. Treatment of seed at low temperature under moist conditions to break its dormancy is called

A vernalization

B chelation

C stratification

D scarification

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56. Photoperiodic stimulus is picked up by

A Photochrome

B Phytohormone

C Enzyme

D Vernalin

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57. Tendrils exhibit/twining of tendrils is due to

A thigmotropism

B seismonasty

C heliotropism

D diageotropism

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58. Auxetic growth is

A increase in cell volume only

B increase in cell number only

C increase in fatty tissue

D increase in intercellular material

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59. Phototatic movements found is

A Plants

B Some Algae

C Bryophytes

D Male gametes

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60. Fruit and leaf drop at early stages can be prevented by the application of:

A Ethylene

B Auxins

C Gibberellic acid

D Cytokinins

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51. Movement of auxin is

52. Drosera tentacles shows

53. A few normal seedlings of tomato were kept in a dark room. After a few days they were found to have become white-coloured like albinos. Which of the following terms will you use to describe them?

54. Why in vivipary an undersirable character for annual crop plants

55. Treatment of seed at low temperature under moist conditions to break its dormancy is called

56. Photoperiodic stimulus is picked up by

57. Tendrils exhibit/twining of tendrils is due to

58. Auxetic growth is

59. Phototatic movements found is

60. Fruit and leaf drop at early stages can be prevented by the application of:

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