Fsc part 2 online preparation for biology chapter 21 (Cell Cycle)

Online Short Questions For Chapter 7 "12th Class Biology Chapter 21 Short Questions Preparation "

Try The Short Questions For 12th Class Biology Chapter 21 Short Questions Preparation

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Biology - 12th Class Biology Chapter 21 Short Questions Preparation

Question # 1

Give four importance of mitosis.

  • Ans 1: i) It transfers unchanged genetic information to the daughter cells
    ii) It helps in all types of asexual reproduction like cloning,tissue culture etc
    iii) It helps in healing of wounds
    iv) It maintains the chromosomes number constant.
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Prepare Complete Set Wise Questions For Chapter 7 "12th Class Biology Chapter 21 Short Questions Preparation "

12th Class Biology Chapter 21 Short Questions Preparation - Set 1

Question # 1

Give four importance of mitosis.

  • Ans 1: i) It transfers unchanged genetic information to the daughter cells
    ii) It helps in all types of asexual reproduction like cloning,tissue culture etc
    iii) It helps in healing of wounds
    iv) It maintains the chromosomes number constant.
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12th Class Biology Chapter 21 Short Questions Preparation - Set 2

Question # 1

Describe changes occur in during G1phase.

  • Ans 1: It is period of extensive metabolic activities,in which cell normal grows in size,specific enzymes are synthesized and DNA base units are accumulated for the DNA synthesis
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12th Class Biology Chapter 21 Short Questions Preparation - Set 3

Question # 1

What is importance of bivalent formation?

  • Ans 1: Due to bivalent formation of homologous chromosomes,the non sister chromatids exchange their segment during the crossing over resulting in new recombination.
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12th Class Biology Chapter 21 Short Questions Preparation - Set 4

Question # 1

How chromatin differs from chromosomes.

  • Ans 1: Chromatin is thread like network,it is formed when chromosomes becomes uncoiled.
    Chromosomes are composed of DNA and protenis. When chromatin is highly coiled it changes in to chromosomes.
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21th Chapter

12th Class Biology Chapter 21 Short Questions

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