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Question
Differentiate between Centrosome and centromere.
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Solution
| Centrosome | Centromere |
| It is an organelle of the animal cell. | It is a non-stainable part of the chromosome at which two chromatids join. |
| It contains two centrioles, which move towards the opposite poles and form spindle fibres during cell division | It provides attachment of spindle fibres during cell division. |
| They are responsible for the inheritance of characters from parents to off-spring. Chromosomes also help in cell division and control various metabolic activities. | It is the region of attachment of the sister chromatids and also the site of attachment to the spindle fibre. |
RELATED QUESTIONS
The diagram given below represents a stage during cell division.
Study the same and answer the questions that follow:
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- Name the stage depicted in the diagram. What is the unique feature observed in this stage?
- Name the type of cell division that occurs during:
- Replacement of old leaves by new ones
- Formation of gametes
- What is the stage that comes before the stage shown in the diagram?
- Draw a neat, labelled diagram of the stage mentioned in (iv) above keeping the chromosome number constant.
Fill in the blank and explain the statement.
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(i) Name the parts of the chromosome labeled A and B.
(ii) Name the structure C. what is its function?
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(v) Name the stages before and after the stage shown in diagram.
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?
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Name the following:
The kind of division normally seen at the tip of the root and shoot system.
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Nuclear envelope and nucleoli reappear in which stage.
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Multiple Choice Question:
The nuclear membrane disappears in
Multiple Choice Question:
The nuclear membrane and nucleolus become indistinguishable during
Explain the following figure.
Identify the stage of mitosis from the below picture. List the chromosomal events in this stage.
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The phase of karyokinesis which is almost the reverse of prophase is ______.
