Fsc part 2 online preparation for biology chapter 19 (Growth and Development)

Online Short Questions For Chapter 5 "12th Class Biology Chapter 19 Short Questions Preparation "

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Biology - 12th Class Biology Chapter 19 Short Questions Preparation

Question # 1

What is blastoderm?

  • Ans 1: The discoidal cap of cells above the blastocoel is called blastoderm.
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Prepare Complete Set Wise Questions For Chapter 5 "12th Class Biology Chapter 19 Short Questions Preparation "

12th Class Biology Chapter 19 Short Questions Preparation - Set 1

Question # 1

What is blastoderm?

  • Ans 1: The discoidal cap of cells above the blastocoel is called blastoderm.
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12th Class Biology Chapter 19 Short Questions Preparation - Set 2

Question # 1

What is difference between inhibitory effect and compensatory effect?

  • Ans 1: Inhibitory effect: Auxin diffuses from apical buds to the lateral buds or branches which inhibit the growth of lateral shoots is called inhibitory.
    Compensatory effect: When the apex is cut and diffusion of auxin is stopped to the lateral buds it releases the lateral buds from apical dominance is called compensatory effect.
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12th Class Biology Chapter 19 Short Questions Preparation - Set 3

Question # 1

How do quantity and quality of light effect plant growth?

  • Ans 1: Light plays important role in the growth of plants:
    Quality of light: The red light favors elongation of cells and blue light enhances cell division but retards cell enlargement. Similarly ultraviolet rays also retard cell elongation.
    Quantity of light:Duration of light affects the growth vegetative & reproductive structures. It also plays a role in inducing or suppressing flowering. The phenomenon is termed as photoperiodism.
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12th Class Biology Chapter 19 Short Questions Preparation - Set 4

Question # 1

Differentiate between growth and development.

  • Ans 1: Growth:In in size of an organism is called growth.It is an irreversible change.
  • Ans 2: Development:Different changes occur during the life of an organism is called development.
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19th Chapter

12th Class Biology Chapter 19 Short Questions

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