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12-3 Amphibians12-3 Amphibians
Amphibian CamoflaugeAmphibian Camoflauge
What is camo good for?What is camo good for?
Hiding from predators
Catching food!
What is an Amphibian?What is an Amphibian?
Examples:Examples:
What is an Amphibian?What is an Amphibian?
VertebrateEctothermicSpends early life in waterAmphibian means:
Beginning of life in: ________________
Adult life on _________________
VertebrateEctothermicSpends early life in waterAmphibian means:
Beginning of life in: ________________
Adult life on _________________
water
land
What is an amphibian?What is an amphibian?
Reproduction & Development
Eggs develop in the water
Reproduction & Development
Eggs develop in the water
What is an amphibian?What is an amphibian?
What is an amphibian?What is an amphibian?
Diversity of amphibiansDiversity of amphibians
•___________ fertilization
•Larvae look like ___________
•Has tail as an adult?
•___________ fertilization
•Larvae look like ________
•Has tail as an adult?
Internal
adults
External
tadpoles
Living on LandLiving on Land
What is needed to live on land?What is needed to live on land?
Living on LandLiving on Land
Tadpoles = same system as fish
Adult amphibians = 2 loops, 3 chambers
Tadpoles = same system as fish
Adult amphibians = 2 loops, 3 chambers
Adult Amphibian HeartAdult Amphibian Heart
Atria Atria
O2 in blood
Not much O2
Mixing of blood
ventricle
Living on LandLiving on Land
MovementStrong skeleton
Frog jumpingSalamander crawling
Muscular limbs
MovementStrong skeleton
Frog jumpingSalamander crawling
Muscular limbs
Amphibians are in DangerAmphibians are in Danger
Why do you think amphibians are more sensitive to environmental changes?
What kind of things do you think can harm amphibians?
Why do you think amphibians are more sensitive to environmental changes?
What kind of things do you think can harm amphibians?
They live in land and water eggs don’t have shells
They have thin skin
Destruction of habitat (swamps, forests)
Pesticides and poisions in their water or air
