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Cell Cycle , Cell Divisiopn and Structure of Chromosomes
(a) Given below is a diagram representing a stage during mitotic cell division in an animal cell
(i) Identify the above stage. Give a reason to support your answer.
(ii) Name the parts labelled 1, 2, 3 and 4.
(iii) What is the function of part 3 ?
(iv) Name the stage which comes just after the stage shown in the diagram. Draw a well-labelled diagram of this stage.
(i) Late prophase as the nuclear membrane is disappearing.
(ii)
1 - Asters
2 - Chromatids
3 -Centromere
4 - Spindle fibres
(iii) Centromere joins the two chromatids of the chromosome. The spindle fibres also attach to the centromere at the time of cell division.
(iv) Metaphase
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State whether the following statements are true or false. If false, rewrite the correct
State whether the following statements are true or false. If false, rewrite the correct
form of the statement by changing the first or last word only:
The diagram shows a stage during cell division. Study the diagram and answer the following questions:
(i) Name the parts labelled 1, 2 and 3.
(ii) Identify the stage shown here by giving one reason.
(iii) Where in the body does this type of cell division occur?
(iv) Name the stage prior to this stage and draw a diagram to represent the same.
Name the following:
(i) The type of cell division which occurs in the cells of the reproductive organs.
State whether the following statements are true or false. lf false rewrite the correct
form of the statement by changing the first or last word only.
Given below is an example of a certain structure and its special functional activity:
Example: (0) Ribosomes and protein synthesis.
On a similar pattern, complete the
following:
(iv) Mitochondria and __ .
Give one point of difference between the following on the basis of what is given in the brackets:
(iv) Karyokinesis and cytokinesis (explain the term)
Mention two points of differences between mitosis and meiosis
(a) Given below is a diagram representing a stage during mitotic cell division in an animal cell
(i) Identify the above stage. Give a reason to support your answer.
(ii) Name the parts labelled 1, 2, 3 and 4.
(iii) What is the function of part 3 ?
(iv) Name the stage which comes just after the stage shown in the diagram. Draw a well-labelled diagram of this stage.State whether the following statements are true or false. If false, write the correct form of the statement by changing the first or last word only.
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