Biology Notes Chapter No 1 Introduction to Biology For Class 9th

Biology Notes Chapter No 1 Introduction to Biology For Class 9th

Biology Notes Chapter No 1 Introduction to Biology For Class 9th.

Biology Notes Chapter No 1 Introduction to Biology For Class 9th
Biology Notes Chapter No 1 Introduction to Biology For Class 9th

Chapter # 01

Introduction to Biology

Q1: Define Biology. Describe various branches of biology.

Ans:     Word “Biology”

In 1736 Swedish scientist Carl Linnaeus for the first time used the world biology.

Meaning:

The word biology has been derived from two Greek words.

  • “Bios” meaning life or living things.
  • “logos” meaning to study, knowledge or thoughts.

Definition:

Biology is the natural science which deals with the study of living organisms

Main branches of Biology:

There are three main branches of Biology

  • Botany: The study of plants.
  • Zoology: The study of animals
  • Microbiology: The study of microorganisms such as viruses and Bacteria etc.

Other branches of Biology:

  1. Morphology (Morph: Form): The branch of biology which deals with the study ofform and structure of living organisms.
  2. Anatomy (Ana – up – tomia – cutting):

The branch of biology which deals with the study of internal structure of living organisms is called anatomy.

  1. Histology:

The Microscopic study of animal and plants tissues is called histology.

  1. Physiology (Physic-function):

The branch of biology which deals with the study of the function of different parts of living organisms is called physiology.

  • Embryology

The branch of biology which deals with the study of development of a new individual from a fertilized egg (zygote) is called embryology.

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