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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 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.
All chromosomes are arranged parallel to equatorial plane of cell in ______ phase of mitosis.
For formation of plasma membrane, ______ molecules are necessary.
With the help of suitable diagrams, explain the five stages of prophase-I of meiosis.
Describe anaphase in mitosis.
Choose the correct answer:
Nuclear membrane reappears in ____________
In which one of the following options the two stages of mitosis have been given in correct sequence?
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
Name the Following
The stage when chromosomes arrange at the equator.
Name the Following
Name the stage during which nuclear membrane and nucleoli reappear.
Name the Following
Nuclear envelope and nucleoli reappear in which stage.
Give Technical Terms
Division of nucleus.
Complete the following sentence with appropriate word :
______means the splitting of the nucleus.
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.
Give the sequence of the events occurring during the prophase of mitosis.
Identify the stage of mitosis from the below picture. List the chromosomal events in this stage.
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.
What is the main function of the spindle fibres during mitosis?
