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

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Biology - 12th Class Biology Chapter 18 Short Questions Preparation

Question # 1

Differentiate between parthenocarpy and apomixes.

  • Ans 1: Apomixes: In apomixes a diploid cell either from the nucellus or megaspore develops into a functional embryo in the absence of a male gamete.The rest of the ovule develops into seed and ovary into fruit.
  • Ans 2: Parthenocarpy: Formation of fruit without fertilization is called parthenocarpy. For example seedless grapes and banana.
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12th Class Biology Chapter 18 Short Questions Preparation - Set 1

Question # 1

Differentiate between parthenocarpy and apomixes.

  • Ans 1: Apomixes: In apomixes a diploid cell either from the nucellus or megaspore develops into a functional embryo in the absence of a male gamete.The rest of the ovule develops into seed and ovary into fruit.
  • Ans 2: Parthenocarpy: Formation of fruit without fertilization is called parthenocarpy. For example seedless grapes and banana.
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12th Class Biology Chapter 18 Short Questions Preparation - Set 2

Question # 1

Define parthenocarpy. How it is artificially induced?

  • Ans 1: Formation of fruit without fertilization is called parthenocarpy. It is artificially can be induced by applying synthetic auxin(NAA).
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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

Define terms menstruation and menopause.

  • Ans 1: Menstrual cycle:In human females the periodic reproductive cycle is completed in approximately 28 days and involves changes in the structure and function of the whole reproductive system. It is called menstrual cycle.
  • Ans 2: Menopause:The end or complete stop of menstrual cycle is called menopause
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12th Class Biology Chapter 18 Short Questions Preparation - Set 5

Question # 1

Define Ovulation.

  • Ans 1: Discharge of ovum from the ovary is called ovulation.
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12th Class Biology Chapter 18 Short Questions Preparation - Set 6

Question # 1

Define fruit set.

  • Ans 1: Retention of the ovary which become fruit after the fertilization. Or it is the process in which ovary after fertilization start to develop in to fruit is called fruit set.
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12th Class Biology Chapter 18 Short Questions

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