Define Cell and Mention different types of Cells

A cell may be defined by the following ways:

(1) A cell is the structural and functional unit of life

(2) The self-reproducing, structural and functional unit matter of protoplasm which is surrounded by a living membrane is known as a cell.

Fig: A Cell

Types of Cells

On the basis of the presence or absence of the distinct nucleus, the cell is of two types.

(i) Prokaryotic Cell and

(ii) Eukaryotic Cell

Fig: A eukaryotic cell (left) and prokaryotic cell (right)

On the basis of physiological activities and the process of division, the cell can be divided into two types, such as-

(i)Somatic cell and

ii) Reproductive cell or gamete.

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