BotZoo Test 3 Flashcards
Animals
domain- eukarya kingdom- animal cell type- eukaryotic cell number- multi nutrition- heterotroph: ingestion
radial symmetry
bisects multiple times
bilateral symmetry
cuts in half
two tissue layers
ectoderm, endoderm; radial symmetry
three tissue layers
ectoderm, mesoderm, endoderm; bilateral symmetry
protosome
mouth first in gastrula
duterostome
anus first, mouth second on gastrula
acoelomate
no body cavity
pseudocoelomate
not fully lined body cavity
coelomate
fully lined body cavity
Porifera
(sponges) marine or freshwater environments
- sessile (don’t move)
- made up of cells
- intracellular digestion
- diffusion
Cnidaria
(Polyp and Medusa)
-aquatic animals
hydrozoa
hydra (cnidaria)
anthozoa
sea anemone (cnidaria)
scyphozoa
jellyfish (cnidaria)
platyhelminthes
flatworms
protonephrida
system for getting out waste
turbellaria
planaria (Platyhelminthes)
cestoda
tapeworm (Platyhelminthes)
trematoda
fluke (Platyhelminthes)
nematoda
roundworm (ex heart worm, hook worm)
trichinella spiralis
trichinosis (in pigs)
annelida
segmented worms
polychaeta
sandworm (annelida)
hirudinea
leech (annelida)
mollusca
mantle- body tissue- calcium carbonate
radula
toothed tongue
open circulatory system
hemocoel- blood bathes organs
gastropoda
snail, slug (Mollusca)
bivalvia
2 shells- filter feeder
ex: mussel, scallop, oysters, clams (Mollusca)
cepholopoda
octopus, squid (Mollusca)
arthropoda
- exoskeleton
- segmentation
- jointed appendages
arachnidia
scorpion, spider, dust mite, tick (arthropoda)
chilipoda
centipede- carnivore (arthropoda)
diplopoda
millipede- herbivore (arthropoda)
crustaceans
crab, lobster, rolly polly, barnacle (arthropoda)
insecta
can fly; reproduce a lot; metamorphosis (arthropoda)
echinoderma
sea star, sea urchin, sea cucumber
-have a water vascular system (resp system)
-get oxygen through canals (tube feet)
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chordata
majority are vertebrates, some invertebrates
characteristics unique to chordates
- Notochord- stiff flexible rod: provides support
- Dorsal, hollow nerve chord
- pharyngeal gill slits
- post anal tail
cephalochorda
lancelet (invertebrate chordates)
urochordata
tunicate, sea squirt (invertebrate chordates)
myxini
(vertebrate chordates)
-not vertebrate! no skeleton protecting spinal chord
ectotherm/ poikilotherm
cold blooded
endotherm/ homeotherm
warm blooded
hagfish
hagfish- jawless fish (myxini)
petromyzoniformes
lamprey- jawless; some are paracidic (myxini)
chondrichthyes
shark, skate, ray- jaws (myxini)
actinopterygii
ray finned fish (boney fish); most diverse
-operculum- passes water over gills
-swim blatter- helps with buoyancy
(myxini)
dipnoi
lobe finned fish; lung fish
-ancestors of land animals; (myxini)
amphibian
frog, salamander, toad- double life (vertebrate chordates)
reptiles
lizard, snake, iguana, croc, alligator, turtle, birds (vertebrate chordates)
amniotic egg
keep egg moist in amniotic fluid sac
mammals
mammory glands- milk (vertebrate chordates)
monotremes
lay eggs: platypus, spiney ant eater (mammal)
marsupial
live birth; immature newborn: kangaroo, koala, opossum, Tasmanian devil, wallaby, wombat (mammal)
placental
live birth; mature young