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The diagram given below represents a certain stage of mitosis - Biology

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Question

The diagram given below represents a certain stage of mitosis: 

  1. Identify the stage of cell division.
  2. Name the parts labelled A and B.
  3. What is the unique feature observed in this stage?
  4. How many daughter cells are formed from this type of cell division?
Answer in Brief

Solution

  1. Anaphase
  2. A - Spindle fibre, B - Centromere
  3. During this stage (anaphase), the two sister chromatids of each chromosome separate and are drawn towards the opposite poles because of the shortening of spindle fibres.
  4. This type of cell division (mitosis) results in the formation of two daughter cells.
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2014-2015 (March) Science Paper 3

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RELATED QUESTIONS

The diagram below represents a stage during cell division. Study the same and then answer the questions that follow: 

 

  1. Name the parts labelled 1, 2, and 3.
  2. Identify the above stage and give a reason to support your answer.
  3. Mention where in the body this type of cell division occurs.
  4. Name the stage prior to this stage and draw a diagram to represent the same.

Given below is a diagram representing a stage during mitotic cell division in an animal cell Examine it carefully and answer the questions which follow.

 

  1. Identify the stage. Give one reason in support of your answer.
  2. Name the cell organelle that forms the ‘aster’.
  3. Name the parts labelled 1, 2 and 3.
  4. Name the stage that follows the one shown above; how is that stage identified?
  5. Mention two differences between mitosis and meiosis with regards to:
    1. The number of daughter cells produced.
    2. The chromosome number in the daughter cells.

With the help of suitable diagrams, explain the five stages of prophase-I of meiosis.


How is mitosis important?

Give important characters of meiosis.

Define the following:

Karyokinesis


Draw a well-labelled diagram to show the anaphase stage of mitosis in plant cells having four chromosomes.


Complete the following sentence with appropriate word  :

______means the splitting of the nucleus.


The karyotype (set of chromosomes) shown below is taken from a dividing cell in a certain individual.
(i) Is the individual male or female? Explain your answer.
(ii) How would you expect
(a) a female cell and
(b) sperm cell to differ in chromosome composition?


In which stage of mitosis the chromosomes align in an equatorial plate? How?


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