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Pierce Labrada

Blume Ch. 12.2

Sponges have little in common with other animals. They have probably __________ separately. Evolved
Most sponges are Asymmetrical and ________. Sessile
A sponge is a hollow _________ with an opening at the top and many small pores along the body tube. Tube
Sponges have no organs or tissues so they use what two things for protection? Spicules and Spongin
Where is water pulled into the sponge and blown out the main opening? What are the small holes called? Pores
Most sponges can produce both sperm and eggs meaning they are what? Hermaphrodite
__________ are invertebrates that include corals, sea anemones, jellyfish, hydras, and the Portuguese Man of War. Cnidarians
Most cnidarians live in what type of water? Salt Water
Most cnidarians have two body _________. Forms
The polyp is ________ shaped and sessile. Vase
The ________ is bell shaped and free-moving. Medusa
What symmetry do cnidarians have? Radial
Two cell layers are arranged into _________; a digestive cavity breaks down food. layers
A _________ net carries impulses and connects all organisms organs. Nerve
Most cnidarians have ________ and stinging cells to help them catch food. Tentacles
Are cnidarians herbivores or carnivores? Carnivores
Cnidarians __________ both sexually and asexually. Reproduce
Cnidarians have existed for more than 600 million years; most of their fossils are _________. Corals
Coral reefs form as they secrete their hard external__________ on those of earlier generations. Skeletons
Coral reefs are ___________ ecosystems that protect costs from erosion. Diverse
Coral reefs provide many things that humans need, these things are called___________. Resources
Created by: plabrada