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Invertebrates
Use for unit test on 4.9.09
99
Science
7th Grade
04/06/2009

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Term
poriferan means
Definition
porebearer
Term
poriferans are the simplest or most complex ? invertebrate
Definition
simplest
Term
pores are...
Definition
tiny openings
Term
poriferans are covered w/
Definition
pores
Term
poriferans are made up of
Definition
cells
Term
all three layers of a sponge have
Definition
amoebocytes w/ wandering cells carrying food and oxygen
Term
the outer layer of a sponge has
Definition
pores,epithelial cells
Term
the middle layer of a sponge has
Definition
reproductive cells, spicules
Term
the inner layer of a sponge has
Definition
collar cells w/ flagella
Term
asexual reproduction
Definition
a new organism forms from a single organsim (budding)
Term
sexual reproduction
Definition
a new organisim form from a female cell and a male cell
Term
cindarian means
Definition
stinging creature
Term
nematocytes
Definition
stinging cells
Term
the mouth of a cnidarian is surronded by
Definition
tenctacles
Term
cnidarians were the first to have
Definition
tissues
Term
cnidarians are classified by
Definition
shape:
polyp
medusa
Term
schyphozoans means
Definition
bowl animals
Term
jelly fish are
Definition
schyphozoans
Term
schyphozoans are what shape
Definition
medusa
Term
schyphozoans move by
Definition
jet propulsion
Term
actinozoans means
Definition
flower animals
Term
sea anemone are
Definition
actinozoans
Term
coral is
Definition
actinozoans
Term
actinozoans are what shape?
Definition
polyp
Term
actinozoans move by
Definition
theey dont!
Term
hyrozoans means
Definition
water animals
Term
hyrdozoans are what shape
Definition
polyp
Term
hydra are
Definition
hyrdrozoans
Term
hyrdrozoans move by
Definition
tumbersaulting loooping flippig etc
Term
symmetry
Definition
occurs when a line or plane divides animal in two identical mirror images
Term
radial symmetry
Definition
a line or plane can pass through a central point at any angle
Term
bilateral symmetry
Definition
only one line or plane of symmetry creates sies
Term
radial symmetry
Definition
a line or plane can pass through a central point at any angle
Term
dorsal
Definition
top
Term
ventral
Definition
belly
Term
anterior
Definition
head
Term
posterior
Definition
tail
Term
platyhelminthes
Definition
flath worms
Term
planarian
Definition
platyhelminthes
Term
tapeworm
Definition
platyhelminthes
Term
fluke
Definition
platyhelminthes
Term
nematodes
Definition
round worms
Term
hookworms
Definition
nematodes/round
Term
pinworm
Definition
nematodes/round
Term
whipworm
Definition
nematodes/round
Term
whipworm
Definition
nematodes/round
Term
earthworm
Definition
annelid
Term
leech
Definition
annelid
Term
what were annelids the first to have?
Definition
orgnas, tubelike digetive system, two openings
Term
worms have ___symmetry
Definition
bilateral
Term
mollusk foot
Definition
uses to move, thick and muscular
Term
mollusk visceral mass
Definition
contains gills,gut and other orgnas
Term
mollusk mantle
Definition
convers visceral mass
Term
gastropod means
Definition
stomach foot
Term
bivalve means
Definition
two shelled
Term
cephalopod
Definition
head foot
Term
snail
Definition
gastropod
Term
slug
Definition
gastropod
Term
gastropod eat by
Definition
s=uses radula to scrape food
Term
bivalve eat by
Definition
filter water for food
Term
clams
Definition
bivalve
Term
scallop
Definition
bivalve
Term
cephalopod eat by
Definition
uses tenteacles and beack
Term
octopus
Definition
cephalopod
Term
squid
Definition
cephalopod
Term
mollusks are the first to have
Definition
organs for respiration
Term
arthropod means
Definition
jointed foot
Term
athropods have..
Definition
jointed limbs and segmented bodies and an exoskeleton made of chiton
Term
an arthropods exoskeleton doess what
Definition
provides support, allows an animal to move, keeps moist....
Term
grasshoper,bee,butterfly are
Definition
insects
Term
lobster,crab,shrimp are
Definition
crustaceans
Term
spider, tick, scorpion are
Definition
arachnids
Term
how many segments do insects have?
Definition
3- head, thorax, abdomen
Term
how many segments to crustaceans have?
Definition
2 or 3
Term
how many segments do arachnids have?
Definition
2- abdomen, chephalothorax
Term
how many segments to millipedes and centipedes have?
Definition
many
Term
how many legs do insects have
Definition
three
Term
how many legs do crustaceans have?
Definition
four or more pairs
Term
how many legs do arachnids have?
Definition
four
Term
how many legs to centipedes have??
Definition
1 pair per segment
Term
how many legs do millipedes have?
Definition
2 per segment
Term
how many antennae do insects have?
Definition
1 pair
Term
how many antennae do crustaceans have?
Definition
2 pair
Term
how many antennae do arachnids have?
Definition
Term
how many antennae do centipedes and millipedes have?
Definition
one
Term
arthropod sense organs
Definition
eyes,bristles,antennae
Term
molting
Definition
shedding exoskeleton
Term
arthropods take up
Definition
75 percent of animals
Term
echinoderm means
Definition
spinyskinned
Term
endoskeleton
Definition
internal skeleton covered w/ spines
Term
water vascular system uses
Definition
water pressure in tube feet to do many functions
Term
wvs order
Definition
sleve plate - ring canal- radial canal- ampulla- tube feet
Term
why are echinoderms closests to verterbrates
Definition
endoskeleton
Term
echinoderms reproduce
Definition
sexual and asexual
Term
echinoderm habitat
Definition
no freshwater
Term
compound eye
Definition
an eye that is made up of many identical light senstive cells that work together
Term
mandible
Definition
a jaw found on some athropods
Term
gangila
Definition
tissue mass
Term
gut
Definition
an intestine in the digestive track
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