amphibians

Question 1

what are some characteristics of amphibians

Answer 1

legs not fins
primative lungs, no diaphram, gulps air
permeable skin can breathe and secrete toxins through it
2 atria heart with blood mixing
ecto thermic

Question 2

what are the major group of amphibians

Answer 2

anura -forggy chair
apoda - worm like things
caudata - newts

Question 3

what are some characteristics of anura

Answer 3

no tail, vocalisation, mostly eggs in water, carvores, widespread but prefer tropics

Question 4

what are some characteristics of the defense mechanism in frogs

Answer 4

defensive inflation and bright colors to mark poisonous forgs

Question 5

what are some characteristics of caudata or newts

Answer 5

head tail and trunk
mostly in the americas
paedomorphsis common

Question 6

what are some characteristics of apoda

Answer 6

eyes covered with skin
legs and pectoral and pelvvic girdles lost
can have scales
burrowing

Question 7

what are some of the threats facing amphibians

Answer 7

> 30% of species are threatened – 120 species
extinct since 1980s
Possible reasons:-
– Habitat loss (main reason)
– Acidification / pollution of freshwaters
– Disease – chytridiomycosis (fungus)
(Batrachochytrium dendrobatidis)
– Climate change
– Increased UV irradiation
– Harvesting