Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
7 Science Chapter 9
| Term | Definition |
|---|---|
| fish | aquatic vertebrates possessing gills, fins & scales |
| scale | bony overlapping plates that protrude from the fish's skin |
| myomere | W-shaped bands of muscle |
| gill | An organ that removes oxygen from water. |
| gill filament | a double row of thin projections that filters water in each gil |
| gill slit | paired openings in the throat behind the mouth |
| operculum | gill cover |
| lateral line | a system of nerve endings that extend over a fish's head & sides |
| roe | fish eggs |
| milt | fluid a male fish releases over the roe; it contains sperm |
| fry | young fish |
| livebearer | fish that give birth to live young |
| photophore | organs that produce light |
| reptile | cold-blooded animals with lungs, scaly skin, and that are born of amniotic eggs. |
| aminion | membrane that contains a developing embryo and its surrounding fluid |
| chromatophore | Cells containing pigment that, through contraction and expansion, produce temporary color changes. |
| regenerate | grows back |
| spectacle | immovable transparent eye covering |
| dewlap | Ornamental crests, frills, and throat fans of iguanids |
| molt | To shed an old outer covering so that it can be replaced with a new one |
| Jacobson's organ | sensing organ located in the mouth of a snake that is used for smelling |
| venom | poisonous liquid containing enzymes & chemicals that destroy portions of a body |
| fang | long hollow or grooved teeth of a snake |
| antivenin | medicine designed to counteract snake venon |
| pit organ | a depression on the side of a pit viper's head between the eyed and nostrils that can detect temperature changes |
| plastron | The lower shell of a turtle |
| carapace | hard outer covering or case of certain organisms such as turtles |
| scute | plates made of keratin that cover the turtle's shell |
| tortoise | turtles that live only on land & have elephantlike feet |
| amphibian | cold-blooded four-legged vertebrates that are most terrestrial but live near water & spend an important part of their life cycle in it |
| metamorphosis | A process in which an animal's body undergoes dramatic changes in form during its life cycle. |
| cold-blooded | regulating body temperature by external means |
| ichthyologists | scientists who study fish |
| ray-finned fish | fish with fins made of webs of skin supported by rays or spines |
| lobe-finned fish | fish with webbed rays attached to the body by a lobe |
| pectoral fins | fins located on the sides of the fish behind its gills |
| pelvic fins | fins located below the pectoral fins on the fish's underside |
| dorsal fin | prominent fin on the top of a fish; used to stabilize the fish while swimming |
| anal fin | fin behind the pelvic; used to stabilize the fish while swimming |
| caudal fin | fin that sticks out from the fish's tail & is used as a propeller |
| spawning | laying large quantities of eggs in the water |
| gas glands | introduce a heavy gas(carbon dioxide) into the bladder to pressurize it so it does not collapse allows the fish to float at its new depth |
| electric organs | organs that allow the fish to generate electricity |
| denticles | The body covering found on sharks, made up of tiny tooth-like structures that give it a sandpaper-like texture. |
| spiracles | A pair of large openings caudal to the eyes. One entry for water to move to gills |
| eye shine | phenomenon in sharks caused by reflective plates in their eyes that helps them see better |
| bioluminescent | capable of glowing |
| labyrinth organ | treelike cavity in the center of the gill chamber of some air-breathing fish |
| swim bladder | large, gas-filled organ tha allows a fish to stay suspended in any depth of water |
| electrocyte | a current-generating cell from an electric organ |
| neutrally buoyant | neither rising nor sinking but remaining at the current depth |
| cyclostomata | class for cartilaginous fish without jaws |
| mermaid's purse | protective case in which some sharks & skates lay their eggs |
| torpedo | electric ray |
| whale shark | largest known fish |
| chimaeras | group containing ratfish, spookfish & elephant fish |
| rostrum | a sawfish's nose |
| skates | long-nosed oviparous batoids |
| pups | baby shark |
| batoids | cartilaginous fish with flattened bodies |
| hemotoxic | venom that affects the circulatory system by causing the red blood cells to burst |
| lateral undulation | the snake bends into a series of curves as it keeps its body flat on the ground |
| rectilinear movement | the snake alternately stretches and shortens segments of its body in order to creep forward in a straight line |
| concertina movement | the snake moves like an accordion |
| sidewinding movement | The process in which a snake supports its body with its head, tail, and two or three other points of contact, it lifts the remainder of its body off the ground and moves it sideways. |
| brood | to sit upon (eggs) to hatch |
Created by:
Mrs_CC
Popular Science sets