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Cht 11: Fish, Amph, Reptile
Spring Exam review 07
26
Science
7th Grade
05/16/2007

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Term
Vertabrate
Definition
p. 368: Living organisms that have a skeleton, or a backbone.
Term
Chordates
Definition
Vertebrates are a subgroup in the phyllum chordata.
Term
Notochord
Definition
A flexible rod that supports a vertabrate
Term
ectotherm
Definition
Requires no help from the environment to control temperature.
Term
endotherm
Definition
A vertebrate whose body temperature is controlled by the environment, like a snake.
Term
Fish
Definition
A vertebrate that lives in water and uses gills to breathe. They are ectotherms.
Term
Jawless fishes
Definition
The major group of fishes are jawless fishes, cartilaginous fishes and bony fishes. Examples: Hagfish and lampreys
Term
Cartilage
Definition
A tissue that is more flexible than a bone.
Term
Cartilaginous fishes
Definition
Fish with jaws, scales and a skeleton made of cartilage. Example: Shark, rays and skates
Term
Swim bladder
Definition
Bony fish contain swim bladders that is an internal, gas-filled sac that helps the fish stay stable at different water depths.
Term
Bony fish
Definition
Fish with jaws, scales, gill slits and a skeleton made of bones. Example: Salmon
Term
Amphibians
Definition
A vertebrate that is endothermic and spends 1/2 of its life in the water and 1/2 on land. Needs water to reproduce. There are 2 groups, salamanders and frogs/toads. Example: Frog
Term
Tadpole
Definition
Larva stage of a frog
Term
Adaptations for life on land in a frog:
Definition
Respiratory and Circulatory systems---Lungs and 3 chambered heart.
Term
Salamanders
Definition
Amphibians with long, slender bodies that keep their tails as adults.
Term
Metamorphosis
Definition
The process of transformation from an immature form to an adult form in two or more distinct stages.
Term
Frog's breath in what 3 ways:
Definition
Skin, gills, lungs
Term
Habitat
Definition
the specific environment in which an animal lives
Term
Why are amphibians in danger?
Definition
Eggs don't have shells and skin is sensitive
Term
Reptiles
Definition
Ectothermic vertabrae that has lungs and scaly skin
Term
Examples of reptiles
Definition
snake, alligator, lizard, turtle, dinosaur
Term
Reptiles obtain oxygen from?
Definition
Lungs
Term
Reptiles skin does what?
Definition
Protects and helps maintain balance of water in the body
Term
How does the kidney going to help reptiles?
Definition
Keeps urine concentrated
Term
Reptile eggs keep them from drying out how?
Definition
membrane and shell
Term
Carnivore
Definition
meat eating animals, like Alligators and Crocodiles
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