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

Discuss diakinesis in meiosis.

  • Ans 1: During this phase the condensation of chromosomes reaches to its maximum.At the same time separation of homologous chromosomes is completed,but still they are united at one point,more oftenly at ends.Nucleoli disappear.
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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

Discuss diakinesis in meiosis.

  • Ans 1: During this phase the condensation of chromosomes reaches to its maximum.At the same time separation of homologous chromosomes is completed,but still they are united at one point,more oftenly at ends.Nucleoli disappear.
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12th Class Biology Chapter 21 Short Questions Preparation - Set 2

Question # 1

What are three sets of microtubules which originate from each pair of centriole during mitosis?

  • Ans 1: Three sets microtubules originate from centrioles are asteral microtubules radiate outward and from aster while other two sets of microtubules compose the spindle i.e the kinetochore microtubules and polar microtubules.
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12th Class Biology Chapter 21 Short Questions Preparation - Set 3

Question # 1

Cancer is uncontrolled cell division. Explain.

  • Ans 1: It is called so because genes controlling the cell division lose their control over cell division and cell divides without any control,so it is called uncontrolled cell division.
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12th Class Biology Chapter 21 Short Questions Preparation - Set 4

Question # 1

How cytokinesis differ in plant and animal cell?

  • Ans 1: Cytokinesis in plants: In plants cytokinesis occur by phragmoplast formation.Golgi vesicles arrange in the center and fuse with each other forming cell wall between two daughter nuclei which in turn divides into two daughter cells.
  • Ans 2: Cytokinesis in animals: In animals the cytokinesis occurs by inward pinching of cell membrane and parent cell divides into two daughter cells.
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12th Class Biology Chapter 21 Short Questions

Here you can prepare 12th Class Biology Chapter 21 (Cell Cycle). Click the button for 100% free full practice.

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