WCHS Zoology Chapter 17
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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| tornaria | the ciliated larval stage of an acorn worm; class Enteropneusta, phylum Hemichordata
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| notochord | a rodlike, supportive structure that runs along the dorsal midline of all larval chordates and many adult chordates
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| pharyngeal slits | one of several openings in the pharyngeal region of chordates, they allow water to pass from the pharynx to the outside of the body; in the process, water passes over gills or suspended food is removed in a filter-feeding mechanism
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| tubular nerve cord | a hollow nerve cord that runs middorsally along the back of chordates, one of four unique chordated characteristics; also called the neural tube, and in vertebrates, the spinal cord
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| postanal tail | a tail that extends posterior to the anus, one of the four unique characteristics of chordates
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| endostyle | a ciliated tract within the pharynx of some chordates that is used in forming mucus for filter feeding
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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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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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