ben 2
Terms
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- can live nearly anywhere there is ________.
- water
- ______-have many body parts to aid in this.
- swimming
- ____- help move, steer, stop and balance
- fins
- ______- protect body and reduce friction
- scales
- ______-strong muscles attach to the backbone to allow vigorous pursuit of prey
- muscles
- _______- well-developed sense of vision,hearing,and smell
- senses
-
UNDERWATER BREATHING
_______- organs which remove oxygen from the water - gills
-
REPRODUCTION
______- fertilization - external
- ______ _____ _____-row of sense organs along each side of the body that can detect vibrations in the water
- lateral line system
-
1.lampreys and hagfish
2.eel-like - jawless
-
1.skeleton never changes from cartilage to bone
2.denticle cover skin as protection
3.must keep swimming to stay afloat and get enough oxygen.
4.sharks ,skates,and rays - cartilage
-
1. skeleton made of bone
2.swim bladder that keeps them afloat - bony
-
JAWLESS
main characteristics -
no jaw
smooth slimy skin
skeleton of cartilage -
JAWLESS
fertilization - external
-
JAWLESS
gas exchange (breathing) - gills
-
JAWLESS
examples -
lamprey
hagfish -
CARTILAGINOUS FISH
main characteristics -
jaw
denticles
skeleton of cartilage
stores oil in liver -
CARTILAGINOUS FISH
fertilization - external
-
CARTILAGINOUS FISH
gas exchange (breathing) - gills
-
CARTILAGINOUS FISH
examples - sharks,skates, and rays
-
BONY FISH (95% OF ALL FISH)
main characteristics -
skeleton of bone
swim bladder
scales -
BONY FISH (95% OF ALL FISH)
fertilization - external
-
BONY FISH (95% OF ALL FISH)
gas exchange (breathing) - gills
-
BONY FISH (95% OF ALL FISH)
examples -
tuna,trout and goldfish
ray-finned
lobe-finned and lung fish -
AMPHIBIANS(double life)
main characteristics -
lays eggs in water
half life in water/ half in land
thin,smooth,moist skin -
AMPHIBIANS(double life)
fertilization - external
-
AMPHIBIANS(double life)
gas exchange (breathing) - gills-then skin and lungs
-
AMPHIBIANS(double life)
examples -
caecillans-legless
frogs and toads (90%) -
REPTILES
main characteristics -
thick,dry skin
amnicotic eggs (on land) -
REPTILES
fertilization - internal
-
REPTILES
gas exchange (breathing) - lungs
-
REPTILES
examples -
lizards,sharks,turtles,
tortoises,crocodiles, and alligators -
WHAT ARE VERTEBRATES?
animals with a ________. - backbone
-
1.phylum to which vertebrates belong
2.vertebrates are the largest group of ______.
3.characteristics of ______. - chordata
- _____- gives the body support
- notochords
- _____ ______ ______-spinal cord in vertebrates
- hollow nord cord
- _________ __________-develop into gills or other part of body
- pharyngeal pouches
- ___-some chordatas only have this embryo stage
- tail
-
1. have a segmented column of bones called vertebrae which surrounds the nerve cord
2.have well-developed head protected by a skull - vertebrates
- _______- warm-blooded
- endotherms
- _______ _____ _____-are able to capture the energy released in the chemical reaction in their cells and are able to maintain a fairly constan temperature
- birds and mammals
- ________-cold-blooded
- ecotnerms
- ______,______,______-body temperature chandes with the environment
- fishes,amphibians,reptiles
- ______-first vertebrates on earth
- fish
- ______-have a thick dry skin which helps them live on land
- reptiles
- _________-obtain oxygen by gulping air into their lungs or by absorbing it though their skin
- amphibians
- ______-all use lungs to breate air
- reptiles
- ______-most have lateral line
- fish
- ________-live part of their life in the water and part on land
- amphibians
- ________-thought to be the ancestors of mordern birds and mammals
- reptiles
- ________-have three classes: jawless, cartilaginous, and bony
- fish
- _______-undergo metamorphosis to charge from larval to adult form
- ampibians
- _______-lay eggs surrounded by a shell to protect them from drying out
- reptiles
- _______-most use gills to breate throughtout their life
- fish
- _____-live in almost every water environment
- fish
- ________-often called ecological indicators due to their sensitivity to air and water pollution
- amphibians
- ________-have stronger, more vertical legs
- reptiles
- ________-eggs contain an amniotic sac filled with amniotic fluid
- reptiles