Amphibia Flashcards
1
Q
characteristics of members of the class amphibia
A
- Bony load-bearing skeleton
- Moist skin with no scales
- Most have metamorphosis
- Gills in juveniles, lungs (usually) in adults
- Ectothermic
- 3 chambered heart
- Kidneys produce urea
- Usually external fertilization and oviparous
- Anamniotic eggs
2
Q
newts belong to the order ________.
A
caudata
3
Q
characteristics of the order caudata?
A
• Northern Hemisphere • Retain tail throughout life • Relatively unspecialized bodies • Pectoral & pelvic appendages are of equal size • Terrestrial and freshwater habitats • No poison secretions • Some exhibit paedomorphosis
4
Q
frogs belong to the order _______.
A
anura
5
Q
characteristics of the order anura?
A
• Northern Hemisphere • Retain tail throughout life • Relatively unspecialized bodies • Pectoral & pelvic appendages are of equal size • Terrestrial and freshwater habitats • No poison secretions • Some exhibit paedomorphosis
