-
Lobed fined fishes are known as what class?
Sarcopterygii
-
Derived early tetrapods had what?
5 digit limbs & lungs
-
What assists in terrestril prey capture?
ventrolateral bending of neck, atlas vertebrea
-
Why did vertebrates move to land?
to get food sources
-
Caecilians belong to what order & class?
- Order Gymnophiona
- Class Amphibia
-
What are some characteriatis of caecilians (or Apoda)?
limbless, worm-like, fossorial or aquatic
-
Salamanders belong to what order & class?
- Order Urodela
- class amphibia
-
What are some characteristics of salamanders or Urodela?
4 limbs & tail
-
frogs & toads belong to what order and class?
- Order Anura
- Class Amphibia
-
What are some characteristics of frogs or other Anura?
tailess & carnivorous as adults, herbivorous as tadpoles
-
Having an operculum-columnella & moist skin is a synapomorphy or what ?
Class amphibia
-
what is direct development?
when an organism skips several stages of morphosis and goes straight to the adult stage
-
How do Amphibians accomplish respiration?
Via lungs, gills & skin
-
what are two characteristics of amphibian skin?
Protection via poison glands, Secretion via mucous glands to keep skin moist & respiration
-
In amphibians what keeps pulmonary & systemic blood seperated?
spiral valve
-
Why do amphibians have vocal cords, where are they & how do they work?
males have them to aid in reproduction, they are in the larynx, vocal sac are resonating chambers
-
The columnella is a bone modified from the ______, a ________.
hyomandibula, gill support
-
Why are amphibians disappearing?
Habitat destruction, pesticides, & global warming & spread of chytrid fungus
-
What fungus attacks the protien keratin in amphibians?
chytrid
|
|
