Test 2 Flashcards
Evolution?
Change over time
Natural selection?
Adaptation- survival of the fit that reproduce and produce viable offspring
Species?
Like organisms that produce liable offspring
Who was Charles Darwin?
Educated theologian, geologist who studied the Galápagos Islands
Sexual selection?
Female crabs choosing male crabs based on looks. Big crap hand
What are female birds black?
Hide while nesting
Sally light foot crab eats what?
Sea lion poop
What animal eats algae quickly at the bottom of the ocean because they get to cold? Sea lions play win them
Marine iguana
What’s all the animals of the Galápagos Islands?
Sally light foot crab- eat sea lion poop
Marine iguana- eat algae at bottom of ocean
Waved albatross- bird spends 6 months flying and 6 months raising kids
Blue footed booby- blue feet bird
Galápagos penguin
Galápagos hawk-only predator
Baby tortoise-hold fresh water sack in them, sea turtle oldest ancestor
Cats eat iguanas
Goats- male goats attract female goats for poaching
What are the sub classes for mammals?
- Prototheria- before uterus. Monotremes, lay eggs, hair, nurse young,duck billed platypus, spiny echidna.
- Meta theria- middle. Have nipples in pouch. Mammary glands- nipples. Kangaroo, koalas, tarmanian Devils.
- Eutheria- true uterus.
What are the characteristics classified in mammals?
1) hair- colors. Zebra, optical illusion for preditor. Tigers, camouflage. Skunks, warning.
2) glands-
mammary glands- produce milk.
Sebaceous glands, lubricates hair and skin, attracts musk.
Sweat glands, promotes cooling, gets rid of waste. Carnivores, rodents. Paws noses sweat glands.
Bats are etaceans, no sweat glands.
3) circulatory system- 4 chambered heart.
4) reproductive system- placenta, uterus. Ovaries always functional. Baculum- penis bone, carnivores, most rodents.
Insectivora-
Order in mammals. Shrews, moles, hedgehogs All eat insects Teeth strengthened with iron, reddish, brown Some are poisonous
What is diurnal, crepuscular, and nocturnal
Daytime
Dawn to dusk
Nighttime
Cows milk
Seals milk
Human milk
20 protein 20 fat 60 lactos
15 protein 60 fat 25 lactose
20 protein 15 fat 65 lactose
Chiropetera?
Order in mammals, all fly bats Second largest order Specialized hand, feet, bone-membrane Most nocturne Echo locate their food. Eat insects, fruits, blood, fish , frogs
Primates-
Tamarins, marmosets, howler monkeys, baboons, orguntans, chimp, gorillas, humans. -opposable thumb, toe -sexual dimorphism - color vision, binocular vision -nails and claws - forward facing eyes, binocular vision Large brains
Carnivors-
Cats, dogs, bears, seals, seal ions,weasels
- all types aquatic, terrestrial (underground)
- legs adapted - run, swim
- canassial teeth, scissor teeth
- eyes forward, large brains
Cetaceans-
Whales, dolphins, porpoises
- bones not cartilage
- modified limbs- swimming.
- hold breath up to 30 min
- nostrils on top of head
Plantigrade-
Heal down first then foot
Whole foot flat ( humans bears porcupine)
Digitigrade-
Finger walking ( carnivores, dogs)
Unguligrade-
Nail ( elk dear horses )
Ungulates
Order in mammals Perissodactyla- odd toed - horses, rhinos, tapirs - 1 or 3 toes - legs lock, increase speed -ever growing teeth Artiodactyla- even toed Sheep, pigs, goats, giraffes - 2 or 4 toes - efficient stomach- ruminant, spit on chew better to digest better - digest twice
Rodentia-
- specialized teeth, yellow iron pigment teeth
- jaw specialization
Mice, rats, porcupines, muskrat, marmots, squirrels, hamsters
Lagomorpha-
Rabbits, pikas, hares
- 2 sets of incisors
- coprophagists, poop eaters
- hoppers, digitigrade, and plantigrade
- hatres-born with hair
- Rabits- pink, blind, hairless