Introduction to biology (FORM ONE)
Introduction
to biology
What is biology?
Biology is a study of living things
or organism and non living things.
Living things include bacteria,
fungi, animals, plants etc.
Biology is derived/comes from two
Greek words;
Bios – means “Life”
Logos – means “study”
The people who study biology are
called Biologist. Very small organism are called microorganism. The simplest
living things are made up of one cell these are called unicellular organism
e.g. bacteria, protozoan and amoeba (also are called microscope organism).
Large organisms are made up of many cells these are called multicellular
organism e.g. fish, trees, man.
WHAT IS LIFE
Life is the state of living which
plants, animals, and other living organisms have before they die. The basic
unit of life is cell. All living things are made up of cell, cell are so small
that they cannot be seen with naked eye.
BRANCHES OF BIOLOGY
There are two main branches of
biology
(1) Botany – Study of plants only
(2) Zoology – Study of animals only
However there are many minor
branches of biology. That deal with different aspects of living things
Example;
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BRANCHES
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AREA OF STUDY
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1.Anatomy
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Physical structure of organisms
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2.Cytology
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Deals with cell
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3.Ecology
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Relation between organisms and
their Environment
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4.Mycology
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Deals with fungi
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5.Taxonomy
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How organisms are named and groups
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6.Physiology
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How organisms body parts function
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7.Parasitology
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Deals with parasites
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8.Immunology
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The body defense against
infections and disease
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