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प्रश्न
Identify the stages of mitosis given below and label the figures.
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उत्तर
(a) Anaphase,
(b) Metaphase,
(c) Telophase.
1. Centriole,
2. Spindle fibres,
3. Chromosomes,
4. Centromere.
5. Daughter nuclei.
संबंधित प्रश्न
Genetic recombination occurs in ______ phase of prophase of meiosis-I.
For formation of plasma membrane, ______ molecules are necessary.
Describe anaphase in mitosis.
Fill in the blank:
______ takes place in body cells resulting in growth and development.
Choose the correct answer:
Which division takes most time?
Choose the correct answer:
Nuclear membrane reappears in ____________
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 in mitosis when the nucleolus starts disappearing.
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 __________.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
The alkaloid colchicine inhibits the formation of the mitotic spindle.
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.
In which stage of mitosis the chromosomes align in an equatorial plate? How?
Give the sequence of the events occurring during the prophase of mitosis.
Name these:
Two steps of the process Mitosis
