Biology: Invertebrates
Terms
undefined, object
copy deck
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Mollusca:
definition - soft-bodied
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Cnidarians:
body plan -
radial symmetry
endoderm, mesoderm, no coelum -
Mollusca:
level of development - system
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Platyhelminthes:
defintion - flatworm
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Annelida:
exchange o2 and co2 - through their skin
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Nematoda:
body plan -
psuedocoelomate
bilateral symmetry -
Mollusca:
obtain food -
raduba: drill, scrape,grate,cut
grazers (algea)/predators
bivalves filter food -
Cnidarians:
medusa - stage w/ a body shaped like an umbrella, w/ tentacles hanging downward
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Annelida:
body plan -
bilateral symmetry
coelomates -
Nematoda:
level of development - system
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Mollusca:
movement - muscular foot, siphons (propel)
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Platyhelminthes:
obtain food - live in host's intestines and live off bodily fluids
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Annelida:
unusual characteristics -
leeches are used for medical uses, some have toxins,
5 hearts -
Platyhelminthes:
reproduction - sexually and asexually
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Mollusca:
unusual characteristics - mantle secretes shell
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Cnidarians:
reproduction -
sexual/medusa
asexual/medusa and polyp -
Annelida:
reproduction -
hermaphrodidic
sexual/asexual/regeneration
produce both egg and sperm -
Cnidarians:
life cycle -
metamorphisis from polyp to medusa: main stage in jellyfish
anemonies and coral have only polyp stage
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Mollusca:
reproduction -
sexually/asexually
snails are hermaphrodidic -
Cnidarians:
movement - contractions propel them through the water in medusa form, polyps are mainly stationary
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Annelida:
obtain food - sift through dirt, get needed nutrients
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Platyhelminthes:
unusual characteristics -
flame cells
flukes can chemically fool immune system -
Mollusca:
body plan - bilateral symmetry, coelomate
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Platyhelminthes:
body plan -
bilateral symmetry
acoelomate -
Annelida:
meaning -
tiny rings
segmented worm -
Cnidarians:
exchange o2 and co2 - direct exchange through cell membrane
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Mollusca:
exchange o2 and co2 - gills
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Cnidarians:
meaning
- hollow gut, nettle
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Annelida:
level of development - system
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Platyhelminthes:
level of development - organ
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Annelida:
movement - ventral bristles assist in crawling, wiggling, etc.
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Cnidarians:
obtain food - use nymatocyst to capture prey, take in for digestion
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Echinodermata:
5 classes -
asteroidea-sea stars
ophiuroidea-brittle stars
Echinomoidea-sea urchins and sand dollars
Holothuroidea-sea cucumbers
Crinoidea-sea lilies and feather stars -
Porifera:
unusual characteristics -
spicules: structural defense mechanism
5000 species
if you put it through a sieve, the cells would separate, and then recollect on the other side (may take several weeks) -
Arthropoda:
exchange o2 and co2 -
respiratory system
-open circulatory system
spiders-book lungs -
Porifera:
3 types
(+1) -
silicon
calcium
and spungeon
+ Spongebob Squarepants... a sponge of his own class (lol) -
Echinodermata:
life cycle - begin as larvae w/ bilateral symmmetry, metamorphis into radial symmetric things
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Cnidarians:
level of development - tissue, 2 cell layers
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Arthropoda:
obtain food -
spider webs
pierce, suck,sponging, chewing -
Cnidarians:
4 types -
jelly fish
hydras
sea anemonies
coral -
Echinodermata:
reproduction -
sexual
larvae -
Nematoda:
unusual characteristics - mouth and anal opening
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Arthropoda:
movement - fly, crawl, etc
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Nematoda:
Aschelminthes
meaning - roundworm
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Echinodermata:
exchange o2 and co2 - water vascular system
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Cnidarians:
polyp form - the stage with a tube shaped body and a mouth surrounded by tentacles
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Mollusca:
3 types -
gastropod: snail, slug
(foot-stomach, get it?)
bivalves:oysters, clams, scallops (two shell- bi--)
cephalopod:squids, octopuses, nautilus
(head-foot)
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Nematoda:
reproduction -
sexual/asexual
seperate female/male -
Echinodermata:
bosy plan - radial symmetry
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Nematoda:
obtain food - live off host
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Arthropoda:
reproduction -
sexually-terrestrial/internal
aquatic/external (eggs)
bees, wasps, and anta are asexual -
Nematoda:
exchange o2 and co2 - direct exchange
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Echinodermata:
unusual characteristics -
bumpy endoskeleton
have no brain -
Platyhelminthes:
exchange o2 and co2 - through cell membranes
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Arthropoda:
body plan -
bilateral symmetry
coelumates -
Platyhelminthes:
movement - metamorphosis- cilia, happenstance
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Echinodermata:
level of development - system
-
Porifera:
reproduction -
sexual/asexual
fragments break off and become new sponges (regeneration?) -
Arthropoda:
level of development - system
-
Porifera:
Body plan - asymetrical
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Echinodermata:
meaning - spiny skin
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Porifera:
obtain food - cells in sponge walls filter food out of water
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Arthropoda:
meaning - joint foot
- Definition of Porifera
-
many holes,
full of holes,
pore-bearer, etc. -
Echinodermata:
obtain food -
carniverous, prey on worms and mollusks,
graze on algea -
Porifera:
level of development - cell
-
Echinodermata:
movement - tiny suction cups on appendages (tube feet)
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Porifera:
exchange O2 and CO2 - O2 is taken in through pore cells, and CO2 is expelled through osculum
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Arthropoda:
unusual characteristics -
antenae
largest phylum
horseshoe crab oldest species -
Porifera:
movement - attach themselves to backs of lobsters, crabs, etc., float w/ tide, mainly are stationary creatures