features of animals a14-17 ls-e-b2; ls-e-a3; ls-e-a4
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Features of Animals
A14-17LS-E-B2; LS-E-A3; LS-E-A4
Study Guide
• 1. What is a simple animal? (A14)• A simple animal has many cells but few
body parts.• Give examples: sponges, worms
2. What is a complex animal? (A 14)
• A complex animal has many body parts.
• Example: a snail
3. What is a sponge? A14
• A sponge is one of the simplest animals.• A sponge has a bag shaped body. Two
cell layers make up the body of the sponge.
Purple Tube Sponge
A sponge garden under the water
A Natural Sea Wool Sponge
Barrel Sponge
4. Why is a snail considered a more complex animal than a worm? A15
• Snails are considered more complex animal because They have bodies made of many parts (shell, head, sense organs, mouth).
• complex
Worm Dissection
• No backbone- few parts - simple
5. Animals can be divided into two groups according to structures that support their
bodies. Name the two groups.A16
• The two groups are vertebrates and invertebrates.
6. Define Vertebrates.A16• Vertebrates are animals with backbones.
Three examples of vertebrates.
• 1. Birds
2. Snakes (Vertebrate)
3.Humans (vertebrates)
4. Bats-vertebrates
7. Define invertebrates and give three examples. A 16
• Invertebrates are animals without backbones.
• An outer covering, such as a shell usually supports its body. This is called an exoskeleton.
Lobster Exoskeleton-no backbone
Spider Exoskeleton – no backbone
What does exoskeleton mean?
• It is an external skeleton found in an invertebrate.
• This definition is not found in the book.
The name of the largest group of invertebrates is: (A16)
• Arthropods
More Arthropods
More Arthropods
Define arthropods. Give 3 examples. A16
• Arthropods have legs with several joints and they do not have a backbone.
• Example: ants, spiders, crabs
Ants-legs with joints, no backbone
• arthropod
Spider- legs with joints, no backbone
• arthropod
Crab- legs with joints, no backbone
• arthropod
11. Name the only mammal that flies. A17
• Bat
12. What is the name of the group of animals that have a backbone, an internal skeleton,
fur, and they give birth to live young?
• Mammals (Not in book)
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