chpt 12 sec 1&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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| notochord | a flexible rod that supports the animal's back
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| cartilage | a connective tissue that is softer than bones, but flexible and strong.
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| vertebrae | similar bones lined up in a row, like beads on a string
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| endoskeleton | internal skeleton
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| ectotherm | an animal whose body does not produce much internal heat -- its body temperature changes depending upon the temperature of its environment
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| endotherm | an animal whose body controls and regulates its temperature by controlling the internal heat it produces
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| fossil | the hardened remains or other evidence of a living thing that existed a long time in the past
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| sedimentary rock | made of hardened layers of sediments, particles of clay, sand, mud, or silt.
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| fish | a vertebrate that lives in the water and has fins, which are structures used for moving.
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| jawless fishes | skeleton made of cartiloage and do not have fins and mouths do not have jaws. their mouths have structures for scraping, stabbing, and sucking.
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| catilaginous fishes | skeleton made of cartilage, have jaws and pairs of fins, pointed, toothlike scales voer their bodies, carnivores
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| bony fishes | have skeletons made of hard bone, body coved with scales and gills
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| swim bladder | an internal gas-filled sac that helps the fish stabilize its body at different depths
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| buoyant force | the force that water exerts upward on any underwater object
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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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Created by:
analopez
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