Basses of classification of Living Organisms.......

HOMOLOGY:

This is the fundamental similiarities in the structure of living organisms. For example the flipper of a whale, the wing of a bat and the arm of a man are built on the same pattern, but are highly specialized due to their adaptations to different habitates. The homologus structure are important in classifying animals.

BIOCHEMISTRY:

Besides morphology, the chemical substances which organism contains are useful in classifying organisms using techniques such as chromotography and electrophoresis, the biochemistry of an organismscan be found easily.

WORK OF BIOCHEMIST:

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.