Invertebrate Review
Question #1
• Which of the following systems are
present in a sponge?
Digestive, Reproductive, Nervous, Excretory, Circulatory,
Musculatory, Respiratory
Answer:
Digestive, Reproductive
Question #2
• Name one organism that has
asymmetrical symmetry.
Answer:
Sponge
Question #3
• What animal has trochophore and what is
its function?
Answer:
Clam; the larvae of a clam (baby clam)
Question #4
• Name one organism that has bilateral
symmetry.
Answer:
Planaria, Roundworm, Earthworms, Clam,
&/Or Crayfish
Question #5
• What animal has setae and what are their
function?
Answer:
Earthworm; aids in movement through soil
Question #6
• What animal has antennae and what is its
function?
Answer:
Crayfish; used to sensing and for equilibrium
Question #7
• What animal has tube feet and what is its
function?
Answer:
Starfish; aide in movement & capturing prey
Question #8
• List the animals that are or can be sexual
reproducers.
Answer:
Sponge, Hydra, Planaria, Roundworm,
Earthworm, Starfish, Clam, & Crayfish
Question #9
• What animal has a clitellum and what is its
function?
Answer:
Earthworm; reproduction/contains babies
Question #10
• What animal has incurrent and excurrent
siphon and what is its function?
Answer:
Clam; allows water to move in and out of the
clam
Question #11
• Compare and contrast the water vascular
system to our circulatory system.
Answer:
Compare: Both systems transport a
nutrients around the body in a liquid.
Contrast: Circulatory system has blood.
The water vascular system uses water.
Question #12
• Tell if each animal lives on land, in water,
or both:
a. Sponge –
a. water
b. Hydra –
b. water
c. Planaria –
c. water
d. Roundworm –
d. both
e. Earthworm –
e. land
f. Starfish –
f. water
g. Clam –
g. water
h. Crayfish -
h. water
Question #13
• What animal has spicules and what is its
function?
Answer:
Sponge; provides structure
Question #14
• Explain the difference between walking
legs and swimmerets on a crayfish.
Answer:
Walking legs are used for movement and
swimmerets are used to produce water
current for reproductive purposes
Question #15
• What animal has eyespots and what is its
function?
Answer:
Planaria; detects light
Starfish; detects light
Question #16
• What animal has mouth and what is its
function?
Answer:
Hydra, Roundworm, Planaria, Earthworm,
Clam, Crayfish, Starfish; take in food
Question #17
• Define filter feeder
Answer:
A method of which food is filtered out of the
water.
Question #18
• What animal has a gastrovascular cavity
and what is its function?
Answer:
Hydra; breaks down food
Question #19
• What animal has foot and what is its
function?
Answer:
Clam; anchors the clam into the ground
Question #20
• Which of the following systems are
present in an starfish?
Digestive, Reproductive, Nervous, Excretory, Circulatory,
Musculatory, Respiratory
Answer:
Digestive, Reproductive, Nervous, Excretory
Question #21
• Which organism has the ability to be a
polyp or a medusa?
Answer:
Hydra
Question #22
• What animal has flame cells and what is
its function?
Answer:
Planaria; moves waste & water
Question #23
• What animal has a crop and what is its
function?
Answer:
Earthworm; stores food
Question #24
• Tell if each animal is sessile or freemoving or both:
a. Sponge –
a. sessile
b. Hydra –
b. both
c. Planaria –
c. free-moving
d. Roundworm –
d. free-moving
e. Earthworm –
e. free-moving
f. Starfish –
f. free-moving
g. Clam –
g. free-moving
h. Crayfish -
h. free-moving
Question #25
• What animal has madreporite and what is
its function?
Answer:
Starfish; allows water to go into the starfish
Question #26
• Name one organism that has radial
symmetry.
Answer:
Hydra &/Or Starfish
Question #27
• Which of the following systems are
present in a roundworm?
Digestive, Reproductive, Nervous, Excretory, Circulatory,
Musculatory, Respiratory
Answer:
Digestive, Reproductive, Nervous, Excretory
Question #28
• Give definition of the following words:
Hermaphroditeproduces both sperm and egg
Sessile –
unable to move
Alternation of Generation –
alternates between a polyp state and a
medusa state in jellyfish
Question #29
• What animal has excretory pores and what
is its function?
Answer:
Planaria; where waste is removed
Question #30
• What animal has green gland and what is
its function?
Answer:
Crayfish; removes waste from the blood
Question #31
• What animal has an osculum and what is
its function?
Answer:
Sponge; allows water to leave the sponge
Question #32
• What animal has a gizzard and what is its
function?
Answer:
Earthworm; grinds up food
Question #33
• Which of the following systems are
present in a hydra?
Digestive, Reproductive, Nervous, Excretory, Circulatory,
Musculatory, Respiratory
Answer:
Digestive, Reproductive, Nervous
Question #34
• How many aortic arches does an
earthworm have? Do they have an open or
a closed circulatory system?
Answer:
5; closed
Question #35
• What animal has cheliped and what is its
function?
Answer:
Crayfish; capture prey and a defensive
weapon
Question #36
• Which of the following systems are
present in a clam?
Digestive, Reproductive, Nervous, Excretory, Circulatory,
Musculatory, Respiratory
Answer:
Digestive, Reproductive, Nervous, Excretory,
Circulatory, Musculatory, Respiratory
Question #37
• What animal has chitin and what is its
function?
Answer:
Crayfish; makes up the shell
Question #38
• What animal has mantle and what is its
function?
Answer:
Clam; protects the internal organs
Questions #39
• Roundworms are famous for their ______.
Answer:
anus
Question #40
• Explain the difference between host and a
parasite.
Answer:
A host is an organism that a parasite lives off of.
A parasite is the organism that feeds off a host.
Question #41
• What animal has ampullae and what is its
function?
Answer:
Starfish; makes the tube feet open & close
Question #42
• What animal has nematocysts and what is
its function?
Answer:
Hydra; paralyzes prey
Question #43
• Which of the following systems are
present in an crayfish?
Digestive, Reproductive, Nervous, Excretory, Circulatory,
Musculatory, Respiratory
Answer:
Digestive, Reproductive, Nervous, Excretory,
Circulatory, Musculatory, Respiratory
Question #44
• Tell the phylum that each organism
belongs to:
a. Sponge –
a. Porifera
b. Hydra –
b. Cnidarian
c. Planaria –
c. Platyhelminthes
d. Roundworm –
d. Nematoda
e. Earthworm –
e. Annelid
f. Starfish –
f. Echinoderm
g. Clam –
g. Mollusca
h. Crayfish -
h. Arthropod
Question #45
• Which of the following systems are
present in an earthworm?
Digestive, Reproductive, Nervous, Excretory, Circulatory,
Musculatory, Respiratory
Answer:
Digestive, Reproductive, Nervous, Excretory,
Circulatory, Musculatory, Respiratory
Question #46
• Define regeneration
Answer:
Ability to re-grow missing parts
Question #47
• Give the function of the following words:
Ganglia –
Control center for body
Heart –
Pumps blood
Digestive Gland –
Breaks down food
Gonad –
Produces sperm and egg
Exoskeleton –
protects the organism
Question #48
• Which of the following systems are
present in a flatworm?
Digestive, Reproductive, Nervous, Excretory, Circulatory,
Musculatory, Respiratory
Answer:
Digestive, Reproductive, Nervous