Term
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Definition
body temp = external environment
mammalian ancestor, amphibians, & Class Reptilia |
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Term
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Definition
body temp regulated metabolically
mammals, birds
allows immediate activity at will |
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Term
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Definition
allows reproduction away from water (birds & mammals have as well)
contain fluid-filled sac (amnion) enclosing embryo |
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Term
Order Squamata
example. two features. In what class? |
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Definition
lizards and snakes
kinetic skull, forked tongue
Class Reptilia |
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Term
| Class Amphibia metamorphosis |
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Definition
from gill-breathing larva (tadpole) to lung-breathing adult
(under hormonal control) |
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Term
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Definition
frogs & toads
Class Amphibia |
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Term
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Definition
salamanders
Class Amphibia |
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Term
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Definition
reptiles, birds (anapsid ancestor)
feature of tetrapods |
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Term
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Definition
mammals (anapsid ancestor)
feature of tetrapod |
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Term
| Osteichthyes main feature |
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Definition
bony fish
homocercal tail: symmetrical tail (they have swim bladder) |
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Term
| Chondrichthyes 2 main features |
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Definition
(cartilaginous fish)
Claspers: males’ modified pelvic fins for sperm transfer
Heterocercal Tail: asymmetrical; gives lift (no swim bladder) |
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Term
| Hagfish/Lamprey 4 main features |
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Definition
jawless fishes
Notochord: no vertebrae
Nerve Cord
Mouth: jawless with sucker-like oral disk and well-developed teeth
Gill Slits: pore-like |
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Term
| Cephalochordata 5 main features |
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Definition
(lancelets) no brain
Notochord: stiff flexible rod that never develops into spine
Nerve Cord: dorsal
Myomere: muscle
Pharynx: feeding
Pharyngeal Slits: feeding |
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Term
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Definition
(tunicates, sea squirts)
Tunic: only in adults; outside contains cellulose
Incurrent and Excurrent Siphon: only in adult; gametes expelled from excurrent siphon
Pharynx: allows filter feeding
Endostyle: 1 of 2 vertebrate characterisicts kept as adult
Pharyngeal Gill Slit: used for filtering food; 2 of 2 vertebrate characteristic kept as adult |
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Term
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Definition
| eggs develop & hatch inside or soon after laying with no nourishment from mom |
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Term
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Definition
| live-bearing, get nourishment from mom |
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Term
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Definition
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