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name 2 characteristics of reptiles
- amnoitic egg
- toes with claws
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what is ectothermic metabolism?how do reptiles adjust to this metabolism?
it is when the metabolism is too slow to make ennough heat for the body. they lie in the sun to absorb heat
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name 2 characteristics that allowed reptiles to become free of water
- eggs with shells
- scales to hold moisture
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what feature of lizards and snakes make them successful predators?
their lower jaw can stretch and move in many directions
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how are birds similar to crocidiles?
both have scales on feet and lay amniotic eggs
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2 characteristics of modern birds
- strong lightweight skeleton
- endothermic metabolism
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what are 2 main functions of bird feathers
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most adult echinoderms have what kind of symetry?
5 part radial symetry
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Deuterostomes include all of the following except which?
B) arthropods
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Sea lilies and feather stars differ from other echinoderms because their mouth
A) is located on the upper surface
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a sea stars tube feet attach to surface by means of
suckers
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tunicates and lancelets are similar in that both
C) are invertibrate chordates
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what type of charateristics showed us that early birds were similar to reptiles?
- claws on wingss
- teeth on beak
- reptilian tail
- no breastbone
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what is the product of double fertilization
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monotremes and marsupials have limited geographical distributions beacause of
continental drift
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to live on land sucessfully plant sneeded to :
- absorb neutrients from surroundings
- prevent bodies from drying out
- reproduce without water to move sperm
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plants are complex multicellular organisms that are primarily terrestrial autotrophs
plants are complicated multicellular things that are land living......
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1 seed part
petals in 3s
paralle leaf veins
branching roots
monocots
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2 seed parts
petals in 2,4,5
branching leaf veins
tap roots
dicots
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3 seed parts
- plant embryo: new sporophyte
- seed coat: protects embryo
- endosperm: nutritiuos tisse (food)
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soft shell, flippers, carnivourus
turtles
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land living, domeshell, feet, vegitarians
tortoises
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water/land, hardshell, feet
terrapins
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toes with claws for climbing
dry scaly skin
ectothermic
well developed lungs
3/4 chambered heArt
internal fertilization
reptile characteristics
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hair
diverse+specialized teeth
endothermic metabolism
mammoryglands
mammal characteristics
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4 types of teeth
- incisors: biting and cutting (front teeth)
- canines: Stabbing And holding
- premolars: crush and grind
- molars: ""
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backbone
segmentation
bilaateral symetry
2 pairs of jointed appendages
cephalizations
true coelom
closed circulatory
complex organ systems
adaptions of vertebrates
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Lampreys vs. hagfish
parasite, freshwater vs. scavengers, marine
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anterior dorsal fin
upright, protection, spines
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pectoral and pelvic fin
steering and balance
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posterior dorsal fin
upright and balance
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2 pr legs per segment
round body
short antenna
plant eaters
dont bite
simple eyes
move slow
millipedes
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1 pr legs per segment
flat body
long antenna
meat eaters
bite
simple eyes
move fast
centipedes
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visceral mass
mantle
foot
3 part body plan of mollusks
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Squid
octopus
chambered nautilis
- internal shell
- no shell
- external shell
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2 main characteristics of sponge
- sessile
- filled with holes,pores
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multicellularity
sex. reproduction
characteristics of mammals
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level of organization from smallest to largest
- 1-cell
- 2-tissus
- 3-organ
- 4-system
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why doesnt a flatworm have a respitory or circulatory system?
because cells are so closse to exterior-- absorb air thru skin
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do tapeworms have a digestive system?y?
their hosts digest it
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what do arthropods share with annelids ?
- true ceolom
- segmented body
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how is arthropod's exoskeleton grown?
it must be shed+ regrown to increase size
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jointed appandages
segmentation
distinct head with eyes
exoskeleton
open circulatory system
general characteristics of Artropods
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not all spiders spin webs but all spiders make silk which may be used to capture prey
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