Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/30

Click to flip

30 Cards in this Set

  • Front
  • Back
porifera
no true tissue
sessile
fileter feeders (intercellular digestion)
no symmetry
lack nerve & muscle cells
ex: sponges
cnideria
radial symmetry
endoderm + ecoderm present
nerve net around mouth
GVS (2 way digestion)
stinging tentacles
ex: jellyfish, coral
platyhelminthes (flatworms)
bilateral symmetry
endoderm + ecoderm + mesoderm
GVS branched
cephalization
ex: tapeworms
nematoda (round worms)
bilateral symmetry
one way digestion
nerve function throughout
breath through diffusion
(all characteristics of flatworms also)
ex: eaphantiasis
annelida (segmented worms)
bilateral symmetry
segmentation (allows for specialization of organs)
primative brain
closed circulatory system
complete nervous system
first true body cavity
ex: leech, earthworm
mollusca
4 parts: shell, foot, visceral mass, mantel
full digestive tract
gills & lungs
open circulatory system
gastropoda
a mollusk
one shell
scavengers
ex: snail, slug
bivalve
a mollusk
2 shells
often used as index fossils
ex: mussel, clam
cephalopoda
most complex brain of mollusks
ex: squid, octopus
arthopoda
jointed appendages
exoskeleton of chitin
most successful phylum in terms of #
one way digestion
open circulatory system
diplopoda
an arthopod
2 pairs of legs per segment
ex: millipedes
chilopoda
an arthopod
1pair of legs per segment
ex: centipedes
arachnida
an arthopod
cephalothorax/abdomen, 8 legs, no wings
crustacea
an arthopod
cephalothorax/abdomen, gills
insecta
an arthopod
largest class by #
head
thorax & abdomen
eings
6 legs
echinodermata
radial symmetry
endoskeleton
water vascular system
most similar to choradates
nerve net
open circulatory system
ex: seastar, sand dollar
chordata
bilateral symmetry
notochord
nerve chord
tail at some point
pharyngeal slits
ex: invertebrates (tunicate) and vertabrata
agnatha (jawless fish)
a chordate
lack true jaw
retain notochord through life
lack paired fins
ectothermic
ex: hagfish
chondrichthyes (cartilaginous fish)
a chordate
ectothermic
2 chambered heart
lack swim bladder
teeth/jaw
ex: shark, ray
osteicthyes (bony fish)
a chordate
ectothermic
swim bladder
teeth/jaw
2 chambered heart
paired fins
amphibia
a chordate
1st vertebrate to move to land
dual life (aquatic and terrestrial) - larvae (gills), adult (lungs)
ectothermic
external fertilization (water needed)
3 chambered heart (for life on land)
gas exchange through skin (moist skin)
ex: toad, frog, salamander
reptillia
a chordate
well adapted to land
scales
3/4 chambered heart
amniotic egg (keeps embryo from drying out on land)
internal fertilization
ectothermic
lungs for gas exchange (kept moist within body)
ex: turtles, lizard
aves
a chordate
endothermic (can survive in colder conditions)
4 chambered heart
adapted to flight: hollow bones, no teeth, smaller organs
internal fertilization
traits remaining from reptiles: scales on legs, amniotic egg
feathers, wings
ex: birds
mammalia
a chordate
endothermic
internal fertilization
mammary glands
4 chambered heart
hair
parental care of young
monotremes
a mammal
lay eggs
ex: platypus, armadillo, spiny anteater)
marsupials
a mammal
have a pouch to care for young (embryo born early then lives in pouch)
ex: kangaroo, opossum, koala bear
placentals
mammals
embryos fully matured in uterus (placenta used for nurishment)
fungi
eukaryotic
multicellular (usually)
heterotrophs
cell walls of chitin
absorb nutrients
ex: mushrooms
plants
eukaryotic
multicellular
autotrophs - photosynthesis
cell walls of cellulose
animals
eukaryotic
multicellular
heterotrophic
lack cell walls
internally digest nutrients