Bob Jones Life Science - Chapter 14
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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| down feather | A short, fluffy feather next to a birds skin that insulates the bird by holding warm air close to its body.
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| contour feather | A long feather that covers and helps insulate a bird, gives it a streamlines shape, repels water, and aids in flight.
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| air sac | One of a series of hollow chambers connected to a bird's respiritory system that allows for a fresh supply of oxygen during both inhalation and exhalation.
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| mammary gland | An organ in mammals that produces milk to nourish young.
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| placental mammal | An endothermic vertebrate that as an embryo receives food and oxygen and has wastes removed through the placenta of the mother.
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| placenta | A structure attached to the wall of the uterus in which the mother's and the embryo's blood vessels pass near each other and exchange nutrients and waste.
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| umbilical cord | A structure that connects a developing embryo to the placenta and that has blood vessels for the exchange of food, wastes, oxygen, and carbon dioxide with the mother.
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| monotreme | A mammal that reproduces by laying eggs.
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| marsupial | A mammal whose young develop in a pouch.
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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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