Amphibians

Question 1

What are tetrapods characterized by?

Answer 1

Chiridium - a muscular limb with joints and digits

Question 2

True/False? Salamanders are highly specialized amphibians

Answer 2

false, they are the least specialized amphibian.

Question 3

What forms the urostyle in frogs?

Answer 3

the fusion of caudal vertebrae (aids with saltatorial locomotion)

Question 4

True/False: all amphibians require water for reproduction and development

Answer 4

true

Question 5

what are some features of caecilians?

Answer 5

highly specialized, elongated and limbless, retain notochord, small eyes, sensory tentacleon head

Question 6

Which amphibian has a tympanic membrane on the surface of head

Answer 6

frogs

Question 7

T/F: amphibians have an aquatic gill-breathing larval stage most often followed by a terrestrial lung-breathing adult stage (via metamorphosis)

Answer 7

true

Question 8

Ambibian embryos lack _______?

Answer 8

amnion

Question 9

ectothermic

Answer 9

regulate body temperature by moving to different microclimates within environment

Question 10

pedicellate teeth

Answer 10

crown and base separated by narrow region of uncalcified dentine

Question 11

pleurodont

Answer 11

teeth attached to inner jaw margin

Question 12

Amphibians have ______ teeth with _______ attachment

Answer 12

pedicellae, pleurodont

Question 13

Amphibians have a heart with ____ atria and ____ ventricle

Answer 13

2, 1

Question 14

The classification is based largely on ____________

Answer 14

temporal skull fenestrae