Draw a well labelled diagram to show the metaphase stage of mitosis in an animal cell having four chromosomes.

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Solution

Metaphase:
The chromosomes are positioned at the cell's equatorial plate during metaphase.
The centromere of each chromosome attaches itself to a spindle fiber.
Chromosomes:
Chromosomes are threadlike structures made up of protein and a single molecule of DNA that carry genetic information from one cell to the next.
Centromere
A centromere is a location on a chromosome where the two chromatids of each chromosome are joined.
Spindle fibers
Spindle fibers are a type of protein that divides a cell's genetic material.

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Given below is a diagram representing a stage during mitotic cell division. Study it carefully and answer the questions that follow :
(a) Is it a plant cell or an animal cell? Give a reason to support your answer.
(b) Identify the stage shown.
(c) Name the stage that follows the one shown here. How is that stage identified?
(d) How will you differentiate between mitosis and meiosis on the basis of the chromosome number in the daughter cells?
(e) Draw a duplicated chromosome and label its parts.

The given diagram shows a stage during mitotic division in an animal cell:

(i) Identify the stage. Give a reason to support your answer.

(ii) Draw a neat labelled diagram of the cell as it would appear in the next stage. name the stage.

(iii)In what two ways is mitotic division in an animal cell different from the mitotic division in a plant cell?

(iv)Name the type of cell division that occurs during:

A. Growth of shoot B.Formation of pollen grains.

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Draw a labeled diagram to show the metaphase stage of mitosis in an animal cell Having '6' chromosomes. [3 MARKS]

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