Topic 30: Amphibians

Question 1

Ichthyostega

Answer 1

Early amphibians w/ fin rays and gills, amphibian-like skull, and pelvic attached to vertebral column.

Question 2

Three Amphibian Clades

Answer 2

Frogs, Salamanders, and Caecilians

Question 3

All Amphibian Characteristics

Answer 3

Permeable skin w/ no scales that acts a respiratory surface, susceptible to desiccation and salt, Ectodermic, buccal pump, water reproduction, external eardums.

Question 4

Ectodermic

Answer 4

Rely on external heat sources rather than metabolic heat production to regulate body heat.

Question 5

Life Cycle

Answer 5

Metamorphosis of aquatic larvae into terrestrial adults.

Question 6

Salamanders

Answer 6

Have tails in the larval and adult stage, no gills in adults, walk, predators to invertebrates.

Question 7

Frogs

Answer 7

Larval tadpoles w/ tail to adults w/o tails, hind legs for jumping. Well-developed vocal cords and ears.

Question 8

Caecilians

Answer 8

Legless amphibians, burrowers, blind, thick skull.