notes of class 9th icse biology chater 1 cell
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ICSE Class 9 Biology Chapter 1 Revision Notes :
Introducing Biology
Biology or Life Sciences is the study of living organisms. Since this term has a wide application, it can be divided into more specific branches. These include:
Botany – study of plants.
Zoology – study of animals.
Human Biology – study of man and his relation to other organisms.
The study of Biology becomes important for the following reasons:
We learn about the diversity of life forms and their value to humans.
We learn to appreciate the intricacies and complexities of the living forms and develop respect for all life forms.
We understand the need for nutrition, health care, animal husbandry and natural resources.
We learn the cause, effect, and principles of treatment of various diseases and improve quality of human life.
We learn the importance of interdependence and independence.
We learn to solve problems of population, pollution, and conservation.