ASU BIO 182 EXAM 2 TEST DETAILED
QUESTIONS AND ACCURATE
SOLUTIONS +
⩥ Which animal has a loose aggregate of cells in layers, but no real
distinct tissue layers? Answer: Sponge
⩥ Which animal is an acoelomate? Answer: Planarian
⩥ Which animal is a pseudocoelomate? Answer: Roundworm
⩥ Which animal is parasitic and lives in the intestinal tract of other
animals? Answer: Roundworm
⩥ True or False: The clam is eucoelomate Answer: True
⩥ Which animal's digestive system consists of intracellular digestion?
Answer: Sponge
⩥ Which two animals have only one opening to their digestive system?
Answer: Hydra, Planarian
,⩥ True or False: The crayfish has two openings to its digestive tract and
classifies it a "tube within a tube" Answer: True
⩥ Which animal's circulatory system uses water transported through the
body of the animal? Answer: Sponge
⩥ Describe the circulatory system of the Hydra Answer: The cells come
in contact with water
⩥ True or False: The planarian has no circulatory system Answer: True
⩥ What kind of circulatory system does the clam have? Answer: Open;
heart
⩥ What kind of circulatory system do the clamworm and earthworm
have? Answer: Closed; blood vessels
⩥ Does the Roundworm have a circulatory system? Answer: No
⩥ True or False: The circulatory system of the crayfish is open and
consists of a heart, vessels, and sinuses Answer: True
⩥ Describe the circulatory system of the grasshopper Answer: Open;
heart, vessels, sinuses
, ⩥ True or False: the sea star has a reduced circulatory system Answer:
True
⩥ True or False: the lancelet has a closed circulatory system Answer:
True
⩥ Is the circulatory system seen in the pig open or closed? Answer:
Closed
⩥ Describe the respiratory organs of the sponge, hydra, and planarian
Answer: Gas exchange occurs directly across cell membranes
⩥ what does the clam use for its circulatory system? Answer: Gills
⩥ What animals use their skin and parapodia for respiratory organs?
Answer: Clamworm and earthworm
⩥ True or False: the Roundworm has respiratory organs Answer: False
⩥ What respiratory organs can be seen in the crayfish? Answer: Gills
QUESTIONS AND ACCURATE
SOLUTIONS +
⩥ Which animal has a loose aggregate of cells in layers, but no real
distinct tissue layers? Answer: Sponge
⩥ Which animal is an acoelomate? Answer: Planarian
⩥ Which animal is a pseudocoelomate? Answer: Roundworm
⩥ Which animal is parasitic and lives in the intestinal tract of other
animals? Answer: Roundworm
⩥ True or False: The clam is eucoelomate Answer: True
⩥ Which animal's digestive system consists of intracellular digestion?
Answer: Sponge
⩥ Which two animals have only one opening to their digestive system?
Answer: Hydra, Planarian
,⩥ True or False: The crayfish has two openings to its digestive tract and
classifies it a "tube within a tube" Answer: True
⩥ Which animal's circulatory system uses water transported through the
body of the animal? Answer: Sponge
⩥ Describe the circulatory system of the Hydra Answer: The cells come
in contact with water
⩥ True or False: The planarian has no circulatory system Answer: True
⩥ What kind of circulatory system does the clam have? Answer: Open;
heart
⩥ What kind of circulatory system do the clamworm and earthworm
have? Answer: Closed; blood vessels
⩥ Does the Roundworm have a circulatory system? Answer: No
⩥ True or False: The circulatory system of the crayfish is open and
consists of a heart, vessels, and sinuses Answer: True
⩥ Describe the circulatory system of the grasshopper Answer: Open;
heart, vessels, sinuses
, ⩥ True or False: the sea star has a reduced circulatory system Answer:
True
⩥ True or False: the lancelet has a closed circulatory system Answer:
True
⩥ Is the circulatory system seen in the pig open or closed? Answer:
Closed
⩥ Describe the respiratory organs of the sponge, hydra, and planarian
Answer: Gas exchange occurs directly across cell membranes
⩥ what does the clam use for its circulatory system? Answer: Gills
⩥ What animals use their skin and parapodia for respiratory organs?
Answer: Clamworm and earthworm
⩥ True or False: the Roundworm has respiratory organs Answer: False
⩥ What respiratory organs can be seen in the crayfish? Answer: Gills
