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One way organisms may adapt to demands from the environment…. camouflage. Camouflage. Camouflage allows organisms to survive and adapt to their environment Hide to escape Hunt without being seen Warning. Concealing coloration. Polar bears and snow…. Snow hides the polar bear.
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One way organisms may adapt to demands from the environment… camouflage
Camouflage • Camouflage allows organisms to survive and adapt to their environment • Hide to escape • Hunt without being seen • Warning
Concealing coloration • Polar bears and snow…. • Snow hides the polar bear
Other ways to conceal… • Artic hare change fur color as the seasons change • Chameleon changes color according to environment
Peppered moths of England Yummy black moths did not blend in (mutant) During the I.R. the lichens are killed off trees >>being the black moth was now better! Before Industrial Revolution white moth was favorable Allele frequency changes over time
Peppered Moths of England • http://www.youtube.com/watch?v=LyRA807djLc
Disruptive coloration • Color breaks up surrounding • Distracts the eye from the animal outline • Leopard in the jungle • Tiger on the hunt
Mimicry--Copycats • By disguise---look like other animals Hawk Moth---makes itself look like a snake
Mimicry • The Indonesian Mimic Octopus • http://www.youtube.com/watch?v=H8oQBYw6xxc
Countershading • Dorsal (upper) side is darker than the ventral (lower) side
Blue jay spitting out Monarch butterfly advertising • Monarch taste bad to birds • Visceroy looks like • Monarch and does not get eaten
Warning Coloration Poison Dart Frog Pipevine Swallowtail Caterpillar Box Jellyfish Cuttlefish