Name:
Biological Sciences    
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| Definition:
Biology is the study of living organisms. |
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 Structure:
Biological science is only 250 years old. Carolus Linnaeus, a Swedish botanist,
started the modern system of taxonomy, the science of grouping organisms
on the basis of their similarities. Living organisms are divided into five
kingdoms. These include plants, protozoans,
monera (cells without nuclei), fungi and animals.
Animals are divided into nine categories called phyla. From them, two major
subgroups are those without vertebrae, and those with a vertebral
skeleton.
 Function:
The basic unit of biology is the cell, a highly specialized building block
with structural and functional activities. Cells may live alone, as unicellular
units, or in clusters, as multicellular organisms. Larger clusters composed
of millions of cells develop specialized parts, or systems
that serve the energy needs of
organisms. Organisms use energy to reproduce,
grow and develop, respond to stimuli, and adjust to their environments.
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