Blume Ch. 12.2
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Sponges have little in common with other animals. They have probably __________ separately. | Evolved
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| Most sponges are Asymmetrical and ________. | Sessile
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| A sponge is a hollow _________ with an opening at the top and many small pores along the body tube. | Tube
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| Sponges have no organs or tissues so they use what two things for protection? | Spicules and Spongin
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| Where is water pulled into the sponge and blown out the main opening? What are the small holes called? | Pores
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| Most sponges can produce both sperm and eggs meaning they are what? | Hermaphrodite
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| __________ are invertebrates that include corals, sea anemones, jellyfish, hydras, and the Portuguese Man of War. | Cnidarians
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| Most cnidarians live in what type of water? | Salt Water
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| Most cnidarians have two body _________. | Forms
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| The polyp is ________ shaped and sessile. | Vase
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| The ________ is bell shaped and free-moving. | Medusa
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| What symmetry do cnidarians have? | Radial
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| Two cell layers are arranged into _________; a digestive cavity breaks down food. | layers
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| A _________ net carries impulses and connects all organisms organs. | Nerve
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| Most cnidarians have ________ and stinging cells to help them catch food. | Tentacles
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| Are cnidarians herbivores or carnivores? | Carnivores
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| Cnidarians __________ both sexually and asexually. | Reproduce
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| Cnidarians have existed for more than 600 million years; most of their fossils are _________. | Corals
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| Coral reefs form as they secrete their hard external__________ on those of earlier generations. | Skeletons
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| Coral reefs are ___________ ecosystems that protect costs from erosion. | Diverse
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| Coral reefs provide many things that humans need, these things are called___________. | Resources
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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