Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
288 Fishes and Amphibians
notochord
precision
propulsion
Fishes 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 balanced
external fertilization in which male and female fishes release their
gametes near each other in the water
chamber of the heart that pumps blood to the gills
in vertebrates, group of cells that develop from the nerve cord and
contribute to the development of other important features
chamber of the heart that receives blood from the body
small, flat, platelike structure near the skin surface of most fishes
gas-filled space in bony fishes that allows a fish to control its depth
tough, flexible material making up the skeletons or parts of
skeletons of vertebrates
movable flap that covers the gills and protects them
filtering unit within the kidney that helps maintain the salt and
water balance of the body and remove cellular waste
Define these terms to show their scientific meaning.
New
Vocabulary
Main Idea Details
Review
Vocabulary
Academic
Vocabulary