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 is oestrous cycle?

  • Ans 1: Oestrous cycle is a reproductive cycle found in all female mammals except human female. In this cycle, the estrogen production prepares the uterus for conception partly and also follicle develops ova.At this stage female needs a physical stimulus of mating for ovulation. She exhibits a desire for mating or is said to be on heat.
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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

What is oestrous cycle?

  • Ans 1: Oestrous cycle is a reproductive cycle found in all female mammals except human female. In this cycle, the estrogen production prepares the uterus for conception partly and also follicle develops ova.At this stage female needs a physical stimulus of mating for ovulation. She exhibits a desire for mating or is said to be on heat.
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12th Class Biology Chapter 18 Short Questions Preparation - Set 2

Question # 1

What are phytochromes?

  • Ans 1: Phytochromes are blue light sensitive proteins found in plants. They exist in two form i.e,P660 andP730. They play an important role in photoperiodism.
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12th Class Biology Chapter 18 Short Questions Preparation - Set 3

Question # 1

What are advantages of cloning?

  • Ans 1: Cloning has the advantage that all offspring behave similarly. Secondly all the members of a clone are genetically identical to their parents. Good characters of hybrids can be transferred to the next generation without any alteration
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12th Class Biology Chapter 18 Short Questions Preparation - Set 4

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 Preparation - Set 5

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 Preparation - Set 6

Question # 1

Define reproduction.What is its significance?

  • Ans 1: Process in which living organism produced their new generation like to themselves is called reproduction.
  • Ans 2: It ensures the survival of species.
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18th Chapter

12th Class Biology Chapter 18 Short Questions

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