The currents of water (containing food) that pass through a sponge are maintained by:
A) collar cells.
B) ganglia.
C) medusae.
D) the osculum.
E) a water-vascular system.
Correct Answer:
Verified
Q25: Insects are:
A)annelids.
B)arthropods.
C)mollusks.
D)beetles.
E)arachnids.
Q26: Which of these groups is characterized by
Q27: Which invertebrate animal group is characterized by
Q28: Hydrae, anemones, and jellyfish are in the
Q29: An animal like a grasshopper can conserve
Q31: Worms with a well-developed circulatory system (including
Q32: Sponges have:
A)a gastrovascular cavity.
B)spicules.
C)a nerve net.
D)muscles.
E)an exoskeleton.
Q33: Flatworms lack:
A)a respiratory system.
B)a reproductive system.
C)a nervous
Q34: Ecdysozoans:
A)have trochophore larva.
B)include mollusks, annelids, and flatworms.
C)have
Q35: A(n)_ provides support and protection to arthropods.
A)cytoskeleton
B)exoskeleton
C)hydrostatic
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