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34 Cards in this Set
- Front
- Back
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what 4 things makes something a chordate?
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~post-anal tail
~ Pharyngeal pouches ~nerve cord ~notochord |
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Pharyngeal pouches
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this structure develops into a gill or other body part
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Nerve Cord
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in vertebrates this structure is filled with spinal fulid
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what is the largest class of fish?
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Bony fish
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what is used to adjust density in a bony fish?
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swim bladder
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most fish have a...
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lateral line system
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lateral line system
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allows fish to detect vibrations in surrouding water
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what is the first vertabrate of earth?
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fish
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are fish endotherms or ectotherms?
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ectotherms
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how many chambers does a fish heart have?
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2
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are fish eggs fertilized internally or externally?
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externally
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are amphibians endo or ecto?
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ectotherms
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how many chambers in an amphibian heart?
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3
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what is an amphibians skin like?
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thin, moist, smooth
NO SCALES |
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how do fish exchange gases?
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gills
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how do amphibians exchange gases
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through their skin
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must have water to...
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Reproduce
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Are amphibians biological indicators?
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yes
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do amphibians live part of their life on land and part on water?
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yes
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are amphibian eggs fertilized internally or externally?
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externally
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what animal first evolved amniotic eggs?
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reptiles
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what does the yolk to for embryo?
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holds food
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how many chambers in a reptile heart?
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3 w/ partial walll
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how many chambers is a crocodilian heart?
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4
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how to reptiles exchange gases?
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lungs
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are reptile eggs fertilized internally or externally?
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Internally
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do reptile eggs dry out
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no, they have a protective shell
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j shaped organ in a frog
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stomach
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3 part organ in a frog
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liver
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what are vomerine teeth used for?
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hold prey
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gullet
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an opening that leads to the stomach. has musclar rings
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first cut made int he frog was...
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ventral
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was the small intestine larger than the frog?
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yes
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where is a frog's toungue attached?
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front/bottom
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