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Question
The diagram given below represents a stage during cell division.
Study the same and answer the questions that follow:
- Identify whether it is a plant cell or an animal cell. Give a reason in support of your answer.
- 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.
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Solution
- Animals cell. Because it lacks a cell wall.
- Metaphase. Chromosomes lined up in one plane at the equator.
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- Mitotic cell division
- Meiosis (Reductional) cell division
- Prophase comes before metaphase.
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RELATED QUESTIONS
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.
All chromosomes are arranged parallel to equatorial plane of cell in ______ phase of mitosis.
Define the following:
Karyokinesis
Fill in the blank:
______ takes place in body cells resulting in growth and development.
Choose the correct answer:
Which division takes most time?
Identify the stages of mitosis given below and label the figures.
The diagram below represents a certain stage of a cell.
(i) Is it an animal cell or a plant cell ? Give one reason in support of your answer.
(ii) Label the parts numbered 1 – 3.
(iii) Which stage (phase) of mitosis is represented in this diagram
Draw a well-labelled diagram to show the anaphase stage of mitosis in plant cells having four chromosomes.
Explain the Term Cell Diakinesis
Give Technical Terms
The stage in mitosis when the nucleolus starts disappearing.
Give Technical Terms
The stage at which spindle fibres begin to be formed.
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
Write the functional activity of the following structure:
Colchicine
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. |
