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

How cytokinesis occur in plants?

  • Ans 1: At cytokinesis,in place of contractile ring a membrane structure,phragmoplast informed from vesicle,which originates from Golgi complex.These vesicles lined up in the center of the dividing cell,where they fuse to form phragmoplast. The membrane of vesicles become the plasma membrane of daughter cells.
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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

How cytokinesis occur in plants?

  • Ans 1: At cytokinesis,in place of contractile ring a membrane structure,phragmoplast informed from vesicle,which originates from Golgi complex.These vesicles lined up in the center of the dividing cell,where they fuse to form phragmoplast. The membrane of vesicles become the plasma membrane of daughter cells.
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12th Class Biology Chapter 21 Short Questions Preparation - Set 2

Question # 1

What are the events of S-Phase?

  • Ans 1: Following G1the S-Phase (synthesis phase) during which the DNA is synthesized and chromosomes number is doubled.
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12th Class Biology Chapter 21 Short Questions Preparation - Set 3

Question # 1

Give main feature of metaphase of Meiosis-1.

  • Ans 1: Nuclear membrane disorganizes.Spindle fibers originate and attached with kinetochore of homologous chromosomes from each pole and arrange bivalent at equator.
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12th Class Biology Chapter 21 Short Questions Preparation - Set 4

Question # 1

Write down the two functions of programmed death of a cell.

  • Ans 1: Programmed cell death helps in proper control of multicellular development which lead to deletion of entire structure (e.g, the tail of developing human embryos) or part of structure (e.g tissue between developing digits.)
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21th Chapter

12th Class Biology Chapter 21 Short Questions

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