6th grade Ch 7
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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___ ___ have long tube-like bodies that are divided into segments | segmented worms
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Segmented worms | are the simplest organisms with a true nervous system and blood contained in vessels
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A long digestive tube runs down the length of the ___ inner body | worm's
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Worms take in dissolved oxygen from the water through their ___. | skin
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Examples of segmented worms | earthworms & leeches
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Mollusks | have soft bodies
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Most mollusks have a thick muscular foot for ___ or to open and close their ___ | movement; shells
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___ have more developed body systems than sponges or worms | Mollusks
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Mollusks take in oxygen through ___ or ___ | gills; lungs
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___ have shells or no shells | Mollusks
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slug | a gastropod that has no shell
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snail | a gastropod that has a shell
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bivalves | mollusks that have two shells
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invertebrates | do not have a skeleton or backbone
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cephalopods have a ___ circulatory system. | closed
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gastropods have a ___ circulatory system | open
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several species of molllusks produce ___. | pearls
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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.
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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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Created by:
Ms. Phillips
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