Tetrapods Flashcards
(110 cards)
Characterized by the presence of ___ limbs, some species secondarily ___ these limbs
4, lost (ex. snakes)
First appeared during the ___
Devonian
Tetrapods include:
Amphibians, Amniotes: Reptiles, Birds, Mammals
(Amphibians) Typically have ___ and ___ or ___ adults
aquatic young, semi-aquatic, terrestrial
(Amphibians) Adults still need to live near ___ or in ___ environments
water, moist
(Amphibian) skin is ___, ___ and ___
smooth, moist, glandular
(Amphibian) skin is modified for ___
cutaneous respiration
(Amphibian) The skin needs to be kept moist to protect against ___
drying
(Amphibian) breathe with their ___ and ___
lungs, skin
(Amphibian) ___ are ancestral to amphibians; some lost their ___ secondarily, and only breath through their ___
lungs, skin
(Amphibians) are ___ or “cold blooded”
ectothermic
(Amphibians) prefer ___ environments
moderately cool
(Amphibians) many undergo ___
metamorphosis
(Amphibians) some species of ___ do not undergo metamorphosis and remain ___, ex. ___
salamander, aquatic, Axolotl
(Amphibians) some have no ___ larval stage
aquatic
(Amphibians) 3 modern orders
Apoda, Urodela, Anura
(Amphibians) Apoda
Caecilians
(Amphibians) Apoda are ___
Limbless
(Amphibians) Apoda resemble an ___ with a ___ mouth
earthworm, jawed
(Amphibians) Apoda eyes are ___ or ___
highly reduced, absent
(Amphibians) Urodela
newts and salamanders
(Amphibians) Urodela are ___ amphibians
Tailed
(Amphibians) Urodela have ___ set at right angles to the trunk
limbs
(Amphibians) Urodela terrestrial salamanders undergo ___
direct development