Test 3 - Lesson 30
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Created by:
dprislovsky on February 24, 2010
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15 terms
Terms | Definitions |
|---|---|
 Oil in the shark's liver is used to regulate buoyance. Bony fishes use their ____________ to regulate buoyancy. | swim bladder |
| A bony fishes' body is usually covered with layers of scales, while a shark's body is covered with ________. | denticles |
| During spawning, femal fishes release eggs (roe), and male fishes release sperm (_______). | milt |
| The tail fin on a fish is also known as the _________ fin. | caudal |
| The ________ of a fish senses vibrations in the water molecules that touch it. It has a similar function to our ear, which senses vibrations in air molecules. | lateral line |
| Bony fishes have a moveble _________ that covers the gills, while sharks just have immovable gill slits. | operculum |
| A fish has a ______-chambered heart.a | two |
| A frog uses its ________ to help regulate its bouyancy. | fat bodies |
| Amphibians may hibernate during periods of extreme cold, or they may ________ during periods of extreme heat. | estivate |
| Frogs use their __________ membrane to hear. | tympanic |
| The Jacobson's organs aid a snake's sense of _______. | smell |
| Reptiles produce __________ eggs, which differ form the soft, jelly-like eggs of fishes and amphibians. | amniotic |
| Snakes produce ________, which affect the nervous system. | neurotoxins |
| A frog has a _______-chambered heart. | three |
| Snakes produce _______, which destroy red blood cells and blood vessels. | hemotoxins |
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