Science is one of the important
subjects in school. It can be taught in relation to many other subjects.
Physics, Chemistry and biology are the three branches of science. Now-a-days
there are separate teachers to teach each branch of science in schools. It can
be discussed under three heads
1. Relationship of Biology with other branches of science:
It is said that no subject is
independent and every subject is dependent on the other. This dependency is
more among the three branches of science. All the branches of science are
interdependent upon each other and there are a number of facts and principles,
which are common to various science subjects. As a result of this new subjects
like Physical Chemistry, Biophysics, Biochemistry, Soil Chemistry, Geophysics
etc., have been introduced. In order to create interest and effectiveness in
learning, the teachers should teach his subject in relation to other subjects.
(i) Relationship of Biology with physics:
The principles of physics are applied
in biology. When the biology teacher teaches about eye, he can compare it with
that of camera. In order to understand the images formed in the eye knowledge
about the image formation by the convex lens is essential. A new branch of
science called Biophysics resulted as a result of this relationship.
Biophysics:
It is the branch of science, which
explains about the application of the methods and principles of physics to
biological phenomena. The electron Microscope and X-ray diffraction apparatus
are the instruments, which are based on physical principles. These instruments
are used to study the physical arrangement and functioning of biological
materials at the molecular level.
A
number of physical principles are essential for the life of the living
organisms. Plants require water to live. Plants absorb water from the soil by
osmosis. The basis of osmosis is density which is a physics principle.
All
living organisms stand, walk and run. For all these activities, gravity is
responsible. If there is no gravity all organisms cannot stand, walk or run.
Pressure
is responsible for blood circulation in man and other animals and for root
pressure in plants. In this way physics can be relate with biology in number of
relationships.
(ii) Relationship of Biology with chemistry:
Biology
is more closely related to Chemistry than Physics. The chemical substances we
used daily in our food.
Biochemistry:
Chemistry deals with the structure
and functions of various elements in the world. Biochemistry deals with the
chemical substances and chemical changes that are found in the living
organisms. This branch combines the knowledge of chemistry and its methods on
living organisms.
The
food molecules are the combinations of carbon, hydrogen, oxygen and nitrogen.
These are chemical substances. We take these chemical substances in the form of
food.
The
composition of enzymes, the changes that take place in food substances,
digestion, absorption and assimilation are all biochemical activities.
2. Relationship of Biology with other school subjects:
(i) Relationship of Biology with Mathematics:
The knowledge of mathematics is
important for the understanding of science especially biology. Mere numbers,
decimals, proportion, inverse ratio, equations, graphs, etc, are some of the
topics. The number of plants and animals in a particular place, the ratio of
one organism to the other, the proportion of substances present in cell and
simple calculations in genetics and physiology require mathematical knowledge.
(ii)Relationship of Biology with History:
History is a subject that tells about
the past events. When history is associated with biology we can narrate the
life history of the scientists associated with a particular topic and the
contributions that they have made in the topic along with years. Story of man,
story of earth, development of different branches is some examples.
(iii) Relationship of Biology with Geography:
Geography deals with the land forms,
climatic conditions, rainfall, sunlight, etc., in a particular place. A
particular type of plant is seen in a particular place because of their
adaptations to that place. So, geographical conditions are closely related to
living organisms.
(iv) Relationship of Biology with language:
Language is a medium through which
express our ideas and communicate among ourselves. Pupils can be asked to write
essays on plants or animals.
3. Relationship of Biology with environment:
The
environment consists of two types of facts. They are physical factors and
biotic factors. Physical factors are light, pressure, temperature, availability
of water, rainfall, nature of soil, etc. The biotic factors are the living
plants and animals. The nature of living organisms is controlled by physical as
well as biotic factors. The nature of living organisms according to environment
is called adaptations.
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