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Invertebrate Animals

Science

QuestionAnswer
What are the animal characteristics? Many celled organisms made of different kinds of cells. They might digest food, get rid of wastes, help in reproduction, or be part of one of these systems.
What are the Animal Classification? Scientists begin classifying organisms into two groups vertebrates (animals with a backbone) and vertebrates (animals that do not have a backbone.)
What are sponges? Adult sponges are sessile which means they remain attached to one place.
What is body support and defense? The soft body of many sponges are supported by sharp, glasslike structure called spicules, so not many animals eat them.
What are sponges reproduction? Sponges reproduce sexually and asexually.
What are Cnidarians? They have
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