This document provides an introduction to biology, including its major divisions and branches. It defines biology as the study of life, and notes its Greek roots. The three major divisions are botany (plants), zoology (animals), and microbiology (microorganisms). Some branches covered are morphology, anatomy, physiology, cell biology, histology, ecology, genetics, pharmacology, and parasitology. The document also lists careers in biology like doctors, dentists, farming, and teaching. It outlines the levels of biological organization from atoms to organisms.

1. INTRODUCTION TO BIOLOGY
Presented by Class 9th

2. --> The word biology comes from 2 greek words ( Bios & Logos )
What is Biology?
--> Bios means LIFE and Logos means STUDY OR KNOWLEDGE
--> Biology is the branch of science that deals with study of life
--> Life is found in organisms called as living organisms
--> Living organisms perform some functions
--> Such as digestion, movement, growth etc.

3. --> There are basically three major divisions of biology
MAJOR DIVISIONS
01. BOTANY
--> It is the branch of biology that deals with study of plants.
02. ZOOLOGY
--> It is the branch of biology that deals with study of animals.
03. MICROBIOLOGY
--> It deals with the study of microorganisms such as bacteria.

4. BRANCHES OF
BIOLOGY
01. MORPHOLOGY
--> It deals with study of external structures such as skin etc.
02. ANATOMY
--> It deals with study of internal structures such as lungs etc.
03. PHYSIOLOGY
--> It deals with study of function such as eyes are use to see.

5. BRANCHES OF
BIOLOGY
04. CELL BIOLOGY
--> It deals with study of cell (basic unit) and it's organelles.
05. HISTOLOGY
--> It deals with study of tissues such as blood and bones.
06. ECOLOGY
--> It deals with study of relationship b/w livings and non livings

6. BRANCHES OF
BIOLOGY
07. SOCIO BIOLOGY
--> It deals with study of relationship of livings with each other.
08. PALEONTOLOGY
--> It deals with study of remote past organisms with fossils.
09. GENETICS
--> It deals with study of heredity characters.

7. BRANCHES OF
BIOLOGY
10. PHARMACOLOGY
--> It deals with study of action of drugs.
11. PARASITOLOGY
--> It deals with study of parasites such as lice , bacteria etc.
12. ENTAMOLOGY
--> It deals with study of insects such as ants, cockroach etc.

8. --> The students , interested in biology can select the following:
CAREERS IN BIOLOGY
01. DOCTOR
--> MBBS ( Bachelor in Medicine & Bachelor in Surgery )
02. DENTIST
--> BDS ( Bachelor in Dental Surgery )
03. Fisheries
--> To increase quantity and quality of fish production.

9. CAREERS IN BIOLOGY
04. FARMING
--> Making of farms ( Cattle farm , Poultry farm etc. )
05. FORESTRY
--> Development and maintaining of Forests.
06. BIOLOGY TEACHER
--> Can teach in School, College and University

10. QURAN AND BIOLOGY
AMBIA : 30
" We made everything living thing from water "
AL-NUR : 45
" And Allah has created every animal from water of them there
are some that creep on their bellies, some that walk on two
legs, and some that walk on four. Allah creates what He will.
Lo! Allah is able to do all things "

11. LEVELS OF ORGANIZATION
01. ATOM
--> Smallest part of matter ( Oxygen, Hydrogen etc )
02. MOLECULE
--> Atoms combine to form molecules ( Water )
03. MACROMOLECULE
--> Molecules combine to form large molecules ( Glucose )

12. LEVELS OF ORGANIZATION
04. CELL
--> Macromolecules combine and make cell ( basic unit )
05. TISSUE
--> Group of cells ( Blood, Bones etc. )
06. ORGAN
--> tissues makes the body parts called organs ( lungs etc. )

13. LEVELS OF ORGANIZATION
07. ORGAN SYSTEM
--> Organs work together ( respiratory system )
08. ORGANISM
--> Different organs combine and make an organism ( Human )
ATOMS --> MOLECULES --> MACROMOLECULES --> CELL
--> TISSUE --> ORGAN --> ORGAN SYS. --> ORGANISM