Zoology is the study of animal life, including how animals share characteristics, are classified, and have systems for reproduction, metabolism, homeostasis, growth, development, heredity, sensory reception, circulation, respiration, digestion, excretion, and locomotion. Organisms can be either unicellular, like bacteria and protists composed of only one cell, or multicellular, like animals, plants, and fungi composed of more than one cell. Classification helps scientists study and understand the behaviors, lives and evolution of millions of life forms.

1. Zoology
Prepared by:
Saman Khidir

2. • Zoology is the study of animal life.
• How animals share characteristic.
• Classification of animal.

3. Reproduction.
Metabolism.
Homeostasis.
Growth and
development.
Heredity.

4. • Unicellular: which is an organism
that composed of only one cell.
 Bacteria and Protista.
• Multicellular: which is an organism
that composed more than on cell.
 Animal, plant, and fungi……

9. • Regulatory system.
• Sensory Reception.
• Circulatory system.
• Respiratory system.
• Digestive system.
• Excretory system.
• Locomotion in animals.

10. Questions??
• Why classification is important to scientists?
• How many types of organisms do we have?

11. Answers
1. Scientists classify living things to make it easier to study and
understand the behaviors, lives and evolutionary
progression of millions of life forms. They use a system
known as taxonomy to classify living things into kingdoms,
phyla, classes, orders, families, genera and species according
to their characteristics.
2. Unicellular and multicellular.

12. Thanks