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

What are Ovoviviparous?

  • Ans 1: In some animals like duck bill platypus internal fertilization leads to internal development of the young ones in a shelled egg and when development is completed shelled egg is laid which hatches the offspring, such animals are called ovaviviparous.
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12th Class Biology Chapter 18 Short Questions Preparation - Set 1

Question # 1

What are Ovoviviparous?

  • Ans 1: In some animals like duck bill platypus internal fertilization leads to internal development of the young ones in a shelled egg and when development is completed shelled egg is laid which hatches the offspring, such animals are called ovaviviparous.
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12th Class Biology Chapter 18 Short Questions Preparation - Set 2

Question # 1

Give two examples of short day plants.

  • Ans 1: Tobacco,Strawberry,Soybean are short day plants.
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12th Class Biology Chapter 18 Short Questions Preparation - Set 3

Question # 1

Define vernalization.

  • Ans 1: Chilling treatment give to the plant seeds before sowing is called vernalization.
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12th Class Biology Chapter 18 Short Questions Preparation - Set 4

Question # 1

What is diplohaplontic life cycle? Give its types.

  • Ans 1: In sexual reproduction,plants have diplohaplontic life cycle with alternating diploid sporophyte and haploid gametophyte generations. its type are isomorphic generations and heteromorphic generations.
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12th Class Biology Chapter 18 Short Questions Preparation - Set 5

Question # 1

What are advantage of cloning?

  • Ans 1: Cloning has the advantage that all the offspring behave similarly.
  • Ans 2: All the members of a clone have similar feature like their parent.
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12th Class Biology Chapter 18 Short Questions Preparation - Set 6

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

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