TOPIC 30: Amphibians

Question 1

earliest amphibian

Answer 1

ichthyostega

Question 2

what is unique about amphibians

Answer 2

they have thin water and gas permeable moist skin

Question 3

gland that amphibians posses to maintain mositure

Answer 3

mucous glands

Question 4

what do aphibians use for water and gass echange

Answer 4

their skin

Question 5

what does it mean to be ectothermic

Answer 5

rely on external heat sources rather than metabollic heat to regulate body tempurature

for example frogs move in and out of shade to maintain body tempurature

Question 6

technique amphibians use to ventilate their lungs

Answer 6

buccal pump

Question 7

oviparous

Answer 7

spawn in water

Question 8

do amphibians have external or internal eardrums

Answer 8

external

Question 9

characteristics of amphibians

Answer 9

• external eardrums
• gills in larval stage only
• three chambered heart

Question 10

the amphibian life cycle is the most dependant on _____

Answer 10

water

Question 11

amphibians that have a tail in the adult stage

Answer 11

salamanders

Question 12

frogs with leathery skin

Answer 12

toads

Question 13

how are frogs classified

Answer 13

long hind legs for jumping, no tail in adult stage

Question 14

amphibians that are legless and resemble snakes. they are blind, deaf, and have a thick jaw with tiny teeth

Answer 14

caecillians