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9 Cards in this Set
- Front
- Back
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what does it take to go from water to land?why would they transistion to land?when did this happen?
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-breathing(gills-lungs),locomoter(fins-limbs) system,water proof skin,feeding system(filter feeding-biting)
-food,escape predators,dryinig out,oxygen -in the devonian era |
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how many life stages does the amphibian have? what kind of skin does it have? did it live in the desert? did it live in salty water?
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-2
-highly water permeable -not many -NONE *strictly terrestrial and fresh water |
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what are the 3 groups of amphibians? which one is the most diverse?
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-frogs,salamnaders,caecilians
-frogs |
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describe the frog?what are the 2 stages of life and what kind of feeders are they at those stages?what are its reporduction modee? parental care?
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-8 vertebrate, fore limbs smaller than hind limbs, havee lungs, no tail,
-larvae=tadpole(herbivorous) adult=frog(carnivorous) -oviparous,amplexus -not much, either hide eggs or develop on her back |
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what does anura mean and what does caudata mean?what does intromittant organ mean?
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anure=no tail
caudata=tailed intromittant organ= any organ on the amke that isused to transfer the sperm into the female |
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how does the salamandar breath?does it have lunsgs? what are the types of fertilization? does the male have intromittant organ?
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-through its skin
-no -internal and external(oviparous, or ovoviviparous) -no |
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where are caecilians found? describe their body? what are their reproduction mode? and parental care?
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-humid tropics
-no arms no legs, toxic skin -oviparous, viviparous, ovoviparous -leaving young or uteral, grow new skin and youn just eats it |
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what was the issue of amphibians invading land? what evolved to solve this problem?
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the eggs had to be layed in water or high humidity because they were seceptable to drying
-the amniotic egg |
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describe the amniotic egg
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amnion=membrane around embryo
allandois=waste desposite yolk sac=nutrients shell=almost water proff(not premeable to everything like 02and CO2) chorion=membrane albumn space=large protein that retains water |
