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23 Cards in this Set

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Amphibian means:
"double life"
Tadpoles: Feeding
a. filter feeders or herbivores
b. eats constantly
c. long coiled intestine filled with food
3 characteristics
Tadpoles: Respiration
gas exchange occurs between both skin and gills
1 characteristic
Tadpoles: Internal Transport
2 chambered heart (atria and ventricle)
1 characteristic
Tadpoles: Movement
swims with a fish-like tail
1 characteristic
Frogs: Feeding
a. carnivores
b. digestive tract changes to a strictly meat-eating design with a much shorter intestine
2 characteristics
Frogs: Respiration
gas exchange occurs in skin and lungs. must keep moist for diffusion to take place through skin
1 characteristic
Frogs: Internal Transport
3-chambered heart with 2 atrium and 1 ventricle
1 characteristic
Frogs: Movement
4 limbs
1 characteristic
Frogs: Excretion
a. kidneys filter waste from blood
b. product of kidneys (urine) travels through the tubes called ureter. can be stored in urinary bladder and exits through cloaca
2 characteristics
Three orders of amphibians:
Urodela, ex:
a. 4 equal sized legs
b. keeps a tail (exchanges gas through it)
c. most develop lungs and some keep their gills

EX: newts, salamanders, mud puppies
3 characteristics
Anura, ex:
a. has lungs as adult
b. 1 set of large hind legs
c. burrow into moist soil

EX: frogs and toads
3 characteristics
Apoda, ex:
a. legless animals; live in water/burrow in moist soil or sediment
b. feed on small invertebrates such as termites
c. have fish-like scales in skin

EX: caecilians
3 characteristics
Same of all 3 categories of amphibians:
Larvae: fuly aquatic, having gills and tail
Frog and Toad Adaptations:
a. powerful back legs to jump far
b. webbed feet for swimming
c. sticky tongue to catch insects
d. eyes stick out of head; allows them to hide under water, but still lets them see whats going on
Differences between Toads and Frogs
a. live in moist places
b. lays eggs in strings
c. coloration

a. lives around water
b. lays eggs in clumps
c. coloration
3 for each
Many amphibians have poison glands beneath their outer skin. What is their purpose?
protection against natural enemies
What happens to animals during hibernation and how is their energy needs met?
a. eats no food
b. uses little oxygen

a. food is stored as fat
Benefits of Amphibians:
a. insect control
b. used in life science studies and medical research
c. food for other animals
What is the transparent membrane that protects the eyes underwater and keeps them moist in air?
Nictitating Membrane
What is the purpose of a cloaca in a frog?
it receives undigested food from the intestine, urine from the kidneys, and eggs or sperm from the reproductive organs. all these materials exit through a single opening.
Largest frog in the world:

Frogs live on all continents except:
Goliath frog