BIO 182 Practical 2 ASU Questions
with Correct Answers
Which animal has only two distinct tissue layers? - ANSWERSHydra
Which animal has a loose aggregate of cells in layers, but no real distinct tissue layers?
- ANSWERSSponge
Which animal is an acoelomate? - ANSWERSPlanarian
Which animal is a pseudocoelomate? - ANSWERSRoundworm
Which animal is parasitic and lives in the intestinal tract of other animals? -
ANSWERSRoundworm
True or False: The clam is eucoelomate - ANSWERSTrue
Which animal's digestive system consists of intracellular digestion? - ANSWERSSponge
Which two animals have only one opening to their digestive system? -
ANSWERSHydra, Planarian
True or False: The crayfish has two openings to its digestive tract and classifies it a
"tube within a tube" - ANSWERSTrue
Which animal's circulatory system uses water transported through the body of the
animal? - ANSWERSSponge
Describe the circulatory system of the Hydra - ANSWERSThe cells come in contact with
water
True or False: The planarian has no circulatory system - ANSWERSTrue
What kind of circulatory system does the clam have? - ANSWERSOpen; heart
What kind of circulatory system do the clamworm and earthworm have? -
ANSWERSClosed; blood vessels
Does the Roundworm have a circulatory system? - ANSWERSNo
True or False: The circulatory system of the crayfish is open and consists of a heart,
vessels, and sinuses - ANSWERSTrue
, Describe the circulatory system of the grasshopper - ANSWERSOpen; heart, vessels,
sinuses
True or False: the sea star has a reduced circulatory system - ANSWERSTrue
True or False: the lancelet has a closed circulatory system - ANSWERSTrue
Is the circulatory system seen in the pig open or closed? - ANSWERSClosed
Describe the respiratory organs of the sponge, hydra, and planarian - ANSWERSGas
exchange occurs directly across cell membranes
what does the clam use for its circulatory system? - ANSWERSGills
What animals use their skin and parapodia for respiratory organs? -
ANSWERSClamworm and earthworm
True or False: the Roundworm has respiratory organs - ANSWERSFalse
What respiratory organs can be seen in the crayfish? - ANSWERSGills
Which animal uses spiracles, and tracheae for respiratory organs? -
ANSWERSGrasshopper
What organs does the sea star use for respiration? - ANSWERSSkin gills and
extensions of coelomic cavity
The Lancelet uses _______ for respiratory organs - ANSWERSSkin
The nervous system of both the Lancelet and Pig are located in which region of the
body? - ANSWERSDorsal
Which animal's nervous system is comprised of a nerve ring in the central disc and an
epidermal nerve network? - ANSWERSSea star
Which animal has both a dorsal and ventral nerve cord? - ANSWERSRoundworm
Describe the nervous system of the Clam - ANSWERSThree ganglia connected by
nerves
Describe the nervous system of the Planarian - ANSWERS"Ladder-like" nervous
system consisting of a brain and two ventral nerve cords
True or False: the Sponge has a nervous system - ANSWERSFalse
with Correct Answers
Which animal has only two distinct tissue layers? - ANSWERSHydra
Which animal has a loose aggregate of cells in layers, but no real distinct tissue layers?
- ANSWERSSponge
Which animal is an acoelomate? - ANSWERSPlanarian
Which animal is a pseudocoelomate? - ANSWERSRoundworm
Which animal is parasitic and lives in the intestinal tract of other animals? -
ANSWERSRoundworm
True or False: The clam is eucoelomate - ANSWERSTrue
Which animal's digestive system consists of intracellular digestion? - ANSWERSSponge
Which two animals have only one opening to their digestive system? -
ANSWERSHydra, Planarian
True or False: The crayfish has two openings to its digestive tract and classifies it a
"tube within a tube" - ANSWERSTrue
Which animal's circulatory system uses water transported through the body of the
animal? - ANSWERSSponge
Describe the circulatory system of the Hydra - ANSWERSThe cells come in contact with
water
True or False: The planarian has no circulatory system - ANSWERSTrue
What kind of circulatory system does the clam have? - ANSWERSOpen; heart
What kind of circulatory system do the clamworm and earthworm have? -
ANSWERSClosed; blood vessels
Does the Roundworm have a circulatory system? - ANSWERSNo
True or False: The circulatory system of the crayfish is open and consists of a heart,
vessels, and sinuses - ANSWERSTrue
, Describe the circulatory system of the grasshopper - ANSWERSOpen; heart, vessels,
sinuses
True or False: the sea star has a reduced circulatory system - ANSWERSTrue
True or False: the lancelet has a closed circulatory system - ANSWERSTrue
Is the circulatory system seen in the pig open or closed? - ANSWERSClosed
Describe the respiratory organs of the sponge, hydra, and planarian - ANSWERSGas
exchange occurs directly across cell membranes
what does the clam use for its circulatory system? - ANSWERSGills
What animals use their skin and parapodia for respiratory organs? -
ANSWERSClamworm and earthworm
True or False: the Roundworm has respiratory organs - ANSWERSFalse
What respiratory organs can be seen in the crayfish? - ANSWERSGills
Which animal uses spiracles, and tracheae for respiratory organs? -
ANSWERSGrasshopper
What organs does the sea star use for respiration? - ANSWERSSkin gills and
extensions of coelomic cavity
The Lancelet uses _______ for respiratory organs - ANSWERSSkin
The nervous system of both the Lancelet and Pig are located in which region of the
body? - ANSWERSDorsal
Which animal's nervous system is comprised of a nerve ring in the central disc and an
epidermal nerve network? - ANSWERSSea star
Which animal has both a dorsal and ventral nerve cord? - ANSWERSRoundworm
Describe the nervous system of the Clam - ANSWERSThree ganglia connected by
nerves
Describe the nervous system of the Planarian - ANSWERS"Ladder-like" nervous
system consisting of a brain and two ventral nerve cords
True or False: the Sponge has a nervous system - ANSWERSFalse
