ZOO301 Slides

• Circulation and Gas · Exchange · • Nutrition and Digestion · • Temperature and body · fluid regulation · • Reproduction and · development

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The term science refers to the organized body of knowledge people have gained using a special system. This system uses observation and experimentation to explain natural phenomena by questioning, What? How? and Why? Science has many branches and Zoology is one of them. Zoology is the scientific study of animals, bacteria and even viruses.

Evolution:

Evolution is a scientific theory that explains How living things change over a long time and how they have come to be the way they are?

Comparative · perspective: · It is based on the idea that · a system cannot be fully · understood without · comparing it with the · systems in different · animals. · Movement · Integumentary system · In Protozoa · In Multicellular Invertebrates Animals In Vertebrates · Support: Skeletal system · Hydrostatic skeleton Exoskeleton Endoskeleton · Movement: Non Muscular and Muscular System · • An Introduction to · Animal Muscles · • Muscular System of · Invertebrates · • Muscular System of · Vertebrates · Movement

END Integumentary system of animals consist of an outer body covering called the integument. The integument of most multicellular invertebrates consist of single layer of cells. The vertebrate integument is multilayered and is called Skin. Skin contains nerves and blood vessels as well as derivatives such as gland , hair and nails.