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Organisms and Their Environments Life Science Sensory Organs.

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Presentation on theme: "Organisms and Their Environments Life Science Sensory Organs."— Presentation transcript:

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2 Organisms and Their Environments Life Science Sensory Organs

3 What are senses? Tell animals what they need to know about their environment All environmental signals involve a receptor organ.

4 What are sensory organs? Sensory organs are any part of the body receives signals from the environment. They help to keep them out of danger and enable them to find food or shelter.

5 Human Senses Seeing Hearing Tasting Smelling Touching

6 Seeing Accomplished using eyes The eye is an almost spherical organ. The eye is protected by bones in the skull. The eye is responsible for detecting colors, shapes, sizes, and space by receiving light.

7 Seeing Other animals’ eyes may differ in type, number, and in location on the body. Behaviors Related to this Sense... Locate food or shelter Recognize objects or other organisms

8 Hearing Accomplished using ears The ear is located on either side of the head. The ears receives sound vibrations from the environment.

9 Hearing Other animals’ hearing organs may differ in type and in location on the body. Behaviors Related to this Sense... Locate food Sense danger to escape enemies Communication

10 Tasting Accomplished using the taste buds located on the tongue. Examples of tastes that humans can detect are... –S–Salty –S–Sweet –B–Bitter –S–Sour

11 Other animals’ taste organs may differ in type and in location on the body. Behaviors Related to this Sense... Judge which foods are okay to eat

12 Smelling Accomplished using the nose Humans react to different smells in the environment in different ways.

13 Other animals’ smelling organs may differ in type and in location on the body. Behaviors Related to this Sense... Avoid danger Find food Recognize other organisms

14 Touching Accomplished using the skin The skin can detect 5 different types of sensations: –touch –pressure –cold –pain –heat

15 Touching Other animals’ touching organs may differ in type and in location on the body. Behaviors Related to this Sense... Identify food React to dangerous situations Care for each other

16 In general, every animal has the senses it needs for its own environment and way of life.

17 Other Animals Senses Some other animals need different information about the world to survive, so they have senses that can be different from humans. –echolocation in bats –night (infrared) vision in some snakes –electric senses of rays and sharks –magnetic senses of migratory birds (pigeons), butterflies, and some whales

18 Echolocation in Bats

19 Night Vision of Some Snakes

20 Electric Senses of Rays and Sharks Go to the following website… info/info-books/sharks-&- rays/senses.htm

21 Magnetic Senses of migratory birds, butterflies, and some whales

22 Organisms and Their Environments Life Science Sensory Organs


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