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

Write about cleavage and discoidal cleavage.

  • Ans 1: The series of mitotic divisions after fertilization of egg is called cleavage.Process of cell division is confined to the small disc of protoplasm laying on the surface of yolk at animal pole.This type of cleavage is called discoidal cleavage.
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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

Write about cleavage and discoidal cleavage.

  • Ans 1: The series of mitotic divisions after fertilization of egg is called cleavage.Process of cell division is confined to the small disc of protoplasm laying on the surface of yolk at animal pole.This type of cleavage is called discoidal cleavage.
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12th Class Biology Chapter 19 Short Questions Preparation - Set 2

Question # 1

Define Gerontology.

  • Ans 1: Gerontology is the study of aging. It also deals with the causes of aging and measures by which aging can be slowed.
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12th Class Biology Chapter 19 Short Questions Preparation - Set 3

Question # 1

Give to role of cytoplasm in the development of an Ascidian.

  • Ans 1: For types of cytoplasm in Ascidian are
    i) Clear cytoplasm produces larval epidermis
  • Ans 2: ii) Yellow cytoplasm produces muscle cell.
  • Ans 3: iii) Grey vegetal cytoplasm gives rise to gut
  • Ans 4: iv) Grey equitorial cytoplasm produce notochord and neural tube.
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12th Class Biology Chapter 19 Short Questions Preparation - Set 4

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

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