Sunday, 9 February 2014

Cell

Cell is the structural and functional unit of all living organisams. Robert Hook(1665) first and use the term of cell. Plant cell have cell walls as the outmost boundary while the cell membrane is inside the cell wall.

Cell Teory:

The cell theory was formulated by a German botnasit, Schlieden, in 1828and a German zoologist, Schwann, in 1839. The salient features or three principles of this theory are under.

1. All organisams are composed of one or more cells
2. All cells aries from pre-existing cells.
3. Cells is the Structural and functional unit of all organisms.

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