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

Differentiate between malignent and benign tumor.

  • Ans 1: Maligent tumor: Malignant tumor or cancer divides more rapidly,mostly invade surrounding tissues get enter in circulatory system for spreading into other body parts.
  • Ans 2: Benign tumor: The small sized local tumor is called benign tumor.Its cells behaves like normal cells and less dangerous.
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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

Differentiate between malignent and benign tumor.

  • Ans 1: Maligent tumor: Malignant tumor or cancer divides more rapidly,mostly invade surrounding tissues get enter in circulatory system for spreading into other body parts.
  • Ans 2: Benign tumor: The small sized local tumor is called benign tumor.Its cells behaves like normal cells and less dangerous.
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12th Class Biology Chapter 21 Short Questions Preparation - Set 2

Question # 1

What change occurs in dividing cell during zygotene?

  • Ans 1: Pairing of chromosomes takes place during the zygetene stage of the meiosis.
    Pairing may start from center to towards end or may start from one end to another end.
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12th Class Biology Chapter 21 Short Questions Preparation - Set 3

Question # 1

Write down the events of metaphase of mitosis.

  • Ans 1: The Kinetochore fibers of spindles attach to the kinetochore region (specialized area in centromere) of chromosomes and align them at the equator of the spindle forming equatorial plate or metaphase plate.
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12th Class Biology Chapter 21 Short Questions Preparation - Set 4

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

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