Second Year Biology Chapter 18 Short Questions Online Preparation (Reproduction)

Online Short Questions For Chapter 4 "12th Class Biology Chapter 18 Short Questions Preparation "

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Biology - 12th Class Biology Chapter 18 Short Questions Preparation

Question # 1

For which the abbreviation of STD is used?

  • Ans 1: This abbreviation stands for sexually transmitted diseases.
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Prepare Complete Set Wise Questions For Chapter 4 "12th Class Biology Chapter 18 Short Questions Preparation "

12th Class Biology Chapter 18 Short Questions Preparation - Set 1

Question # 1

For which the abbreviation of STD is used?

  • Ans 1: This abbreviation stands for sexually transmitted diseases.
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12th Class Biology Chapter 18 Short Questions Preparation - Set 2

Question # 1

What is role of progestrone in pregnancy?

  • Ans 1: The end or complete stop of menstrual cycle is called menopause. After menopause female can't produce any more ovum or egg & can't give birth to any child.
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12th Class Biology Chapter 18 Short Questions Preparation - Set 3

Question # 1

Enlist methods of asexual reproduction.

  • Ans 1: Types of asexual reproduction are:-
  • Ans 2: a) Budding b) Parthenogenesis c) Cloning d) Tissue culture e) Apomixes f) Sporulation g) Vegetative propagation h) Artificial propagation
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12th Class Biology Chapter 18 Short Questions Preparation - Set 4

Question # 1

Differentiate between isomorphic and heteromorphic generation.

  • Ans 1: Isomorphic:If gemetophtye and sporophyte generation are vegetatively and morphologically similar then they are called isomorphic generation.
  • Ans 2: Heteromorphic: Ifgametophyte and sporophyte generations are vegetatively and morphologically dissimilar then they are called heteromorphic generations
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12th Class Biology Chapter 18 Short Questions Preparation - Set 5

Question # 1

What is vernalization?

  • Ans 1: Biennials and perennials plants are stimulated to flower by exposure to low temperature. This is called vernalization. Duration of low temperature (chilling) treatment required varies from four days to three months.Temperature around 4oC is found to be very effective.
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12th Class Biology Chapter 18 Short Questions Preparation - Set 6

Question # 1

Distinguish between vernalization and seed dormancy.

  • Ans 1: Vernalization: vernalization is the chilling treatment given to seed before sowing is called vernalization.
  • Ans 2: Dormancy:Dormancy is special condition of rest which enables an embryo to survive the unfavorable environmental conditions.
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12th Class Biology Chapter 18 Short Questions

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