What is the role of nucleus in a cell?

It synthesises digestive enzymes

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It contains the hereditary material

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It regulates the entry and exit of materials in a cell

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It helps in recycling cellular components

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Solution

The correct option is B
It contains the hereditary material

Eukaryotic cells have a well-defined nucleus. It is covered by a nuclear membrane and contains DNA - the hereditary (genetic) material of the cell.
DNA in association with a variety of proteins forms thread-like structures called chromatin fibres. These fibres condense during cell division to form chromosomes.

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