6 groups of invertebrates

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Study for house gill science

Sponges

are the simplest invertebrates. They live in water. They filter food from the water that surrounds them.

Cnidarians

Also live in water. Animals in this group have a central opening surrounded by tentacles. They take in food and eliminate waste through this opening. Jellyfish, sea enamones hydras, corals are cnidarians.

Worms

Are animales with soft, tube-shaped bodies and a distinct head. Some worms live inside other animals. Others live in the water or on land.

Mollusks

have a muscular foot that allows them to move and hunt for food. Some mollusks live on land. Others live in water. Clams, snails, and octopuses or mollusks.

Echinoderms

Are water animals that have a central opening for taking in food. Sea stars amd samd dollars are echinoderms.

Arthropods

Are invertebebrats that are found on land, in the water, and in the air. They have legs. Some have wings. Insects, spiders, crabs, and millipeds are arthropods.

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