Question

16.
Where does the nucleus lie in a cell? Give its composition. Also mention its function,​

Answer 1

Answer:

Nucleus lies in the centre of the cell.Its composed of nucleoplasm,nucleolus,chromatin and DNA with proteins.

It controls the activities of the cell and is called as the brain of the cell.

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Answer 2

Answer:

Nucleus is the King or Brain of the cell.

In animal cells the nucleus is present in the center of the cell.But in plant cell the nucleus is present in the side of the cell because a large vacuole occupies the center space of the cell.In most organisms the nucleus is in the middle of the cell.

Composition of nucleus-

(a) Nuclear membrane

(b) Nucleolus

(c)Chromatin network

(d)Nuclear sap

Functions-

• Nuclear controls and coordinates all functions of a cell.
• Nucleus contains chromosomes(chromatin material) that carry information for inheritance from parents to offspring.
• In unicellular organisms nucleus plays central role in cellular reproduction.

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