Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.288 Fishes and Amphibians
notochordprecisionpropulsionFishes and Amphibians
Section 28.1 Fishes
Skim Section 1 of the chapter. Write two questions that come to
mind from reading the headings and the illustration captions.1.2.Use your book or dictionar y to define notochord.Write the correct term in the left column for each definition below.receptors that enable fishes to detect movement in the water and
help keep them upright and balancedexternal fertilization in which male and female fishes release their
gametes near each other in the waterchamber of the heart that pumps blood to the gillsin vertebrates, group of cells that develop from the nerve cord and
contribute to the development of other important featureschamber of the heart that receives blood from the bodysmall, flat, platelike structure near the skin surface of most fishesgas-filled space in bony fishes that allows a fish to control its depthtough, flexible material making up the skeletons or parts of
skeletons of vertebratesmovable flap that covers the gills and protects themfiltering unit within the kidney that helps maintain the salt and
water balance of the body and remove cellular wasteDefine these terms to show their scientific meaning.New
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