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प्रश्न
In which stage of mitosis the chromosomes align in an equatorial plate? How?
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उत्तर
The chromosomes align in an equatorial plate during metaphase stage of mitosis. Each chromosome gets attached to a spindle fibre by its centromere which is known as the chromosomal fibre. During metaphase the sister chromatids are pulled back and forth until they align along the equator of the cell called equatorial plane.
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संबंधित प्रश्न
The diagram given below represents a certain stage of mitosis:
- Identify the stage of cell division.
- Name the parts labelled A and B.
- What is the unique feature observed in this stage?
- How many daughter cells are formed from this type of cell division?
Fill in the blank:
______ is the indirect cell division.
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.
Identify the stages of mitosis given below and label the figures.
Explain the Term Pachytene
Name the following:
Replacement of dead cells is accomplished by which process.
Name the following:
The kind of division normally seen at the tip of the root and shoot system.
Name the Following
The stage when chromosomes arrange at the equator.
Complete the following sentence with appropriate word :
Colchicine arrests cell division at __________.
Multiple Choice Question:
Karyokinesis is the division of
Multiple Choice Question:
The nuclear membrane disappears in
Column ‘II’ is a list of items related to ideas in Column ‘I’. Match the terms in Column ‘II’ with a suitable idea given in Column ‘I’.
| Column I | Column II |
| (i) Anaphase | (a) Chromosomes become arranged in a horizontal plane at the equator. |
| (ii) Prophase | (b) Daughter chromosomes move to opposite poles of the spindle. |
| (iii) Telophase | (c) Chromosomes become visible as fine, long threads. |
| (iv) Metaphase | (d) Chromosomes lose their distinctiveness and gradually become transformed into chromatin network. |
Explain the following figure.
Identify the stage of mitosis from the below picture. List the chromosomal events in this stage.
What is the main function of the spindle fibres during mitosis?
