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प्रश्न
Write the functional activity of the following structure:
Colchicine
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उत्तर
It inhibits the formation of the mitotic spindles.
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संबंधित प्रश्न
The diagram below represents a stage during cell division. Study the same and then answer the questions that follow:
- Name the parts labelled 1, 2, and 3.
- Identify the above stage and give a reason to support your answer.
- Mention where in the body this type of cell division occurs.
- Name the stage prior to this stage and draw a diagram to represent the same.
With the help of suitable diagrams, explain the five stages of prophase-I of meiosis.
The fig given alongside shows a certain stage in a cell division in a cell with four chromosomes.
(i) Name the parts of the chromosome labeled A and B.
(ii) Name the structure C. what is its function?
(iii) Name the type of division . Give a reason.
(iv) Name the stage of division.
(v) Name the stages before and after the stage shown in diagram.
Choose the correct answer:
Which division takes most time?
Differentiate between Centrosome and centromere.
The figure below shows a certain stage of mitosis:
(i) Name the stage,
(ii) Label the parts 1 to 4
(iii) How many chromosomes are shown here?
Name the following:
The kind of division normally seen at the tip of the root and shoot system.
Give Technical Terms
The stage at which spindle fibres begin to be formed.
Give Technical Terms
Division of nucleus.
Complete the following sentence with appropriate word :
______means the splitting of the nucleus.
Complete the following sentence with appropriate word :
Colchicine arrests cell division at __________.
Multiple Choice Question:
Karyokinesis is the division of
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?
The diagram given below represents a stage in mitosis.
- Identify the stage given above.
- Give one reason to support your answer in (a).
- Mention the number of chromosomes given in the diagram.
During Mitosis what is the position of chromatids in the anaphase?
