Unit 4 Lab 16
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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| echinoderms | slow-moving or sessile marine animals that include sea stars and sea urchins
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| deuterostomes share developmental characteristics | radial cleavage, formation of the anus from the blastopore
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| water vascular system | a network of hydraulic canals branching into tube feet that function in locomotion and feeding
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| Asteroidea | sea stars and sea daisies
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| Ophiuroidea | brittle stars
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| Echinoidea | sea urchins and sand dollars
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| Crinoidea | sea lilies and feather stars
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| Holothuroidea | sea cucumbers
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| Notochord | present in all embryos, and may be present or absent/reduced in adults.
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| Dorsal tubular nerve cord | forms by an infolding of the ectoderm tissue, which then pinches off and becomes surrounded by mesoderm.
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| Pharyngeal gill slits | in fish, these have become modified as gills, and in humans as our ears and eustachian tubes
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| Postanal tail | is present and extends behind the anus in many taxa, thus the anus isn’t at posterior tip of body. In humans, the tail is present during embryonic development, but is subsequently resorbed
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| Lancelets | named for their bladelike shape
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| Agnatha | fish lacking jaws
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| Chondrichthyes | cartilaginous fish
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| Osteichthyes | bony fish
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| Amphibia | amphibians
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| Reptilia | reptilia
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| Aves | birds
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| Mammalia | mammals
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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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