key terms
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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| Vertebrate | Animal with a backbone.
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| endoskeleton | Skeleton inside the body.
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| invertebrate | Animal without a backbone.
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| Exoskeleton | Skeleton on the outside of the body.
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| Pores | Tiny openings.
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| Poriferan | Invertibrate animal with pores.
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| Spicule | Small, hard, needlelike structure of a sponge.
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| Cnidarian | Invertebrate animal with stinging cells and a hollow central cavity.
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| Polyp | Cuplike form of a Cnidarian.
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| Medusa | Umbrella-like form of a Cnidarian.
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| Platyhelminth | Type of worm with a flattened body.
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| Parisite | Organism that gets its food by living on or in the body of another organism.
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| Nematode | Type of worm with a segmented body.
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| Annelid | Type of worm with a segmented body.
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| Setea | Tiny, hairlike bristles.
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| Closed circulatory system | Organ system in wich blood moves through vessels.
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| Mollusk | Soft-bodied organism.
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| Mantle | Thin membrane that covers a mollusk's organs.
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| Radula | Rough, tonguelike organ of a snail.
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| Echinoderm | Spiny-skinned animal.
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| Wtaer-vascular system | System
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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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