Hydra, anemones, and jellyfish are in the phylum
A) Flagellates.
B) Cnidaria.
C) Porifera.
D) Platyhelminthes.
E) Protista.
Correct Answer:
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Q33: Which of these groups is characterized by
Q34: The simplest multicellular animals that have only
Q35: The phylum Nematoda includes which of the
Q36: An animal such as a grasshopper can
Q37: Ecdysozoans
A) include mollusks, annelids, and flatworms.
B) have
Q39: Which of these groups is characterized by
Q40: Sponges have
A) an exoskeleton.
B) a nerve net.
C)
Q41: Spiders belong to the
A) chordates.
B) arthropods.
C) mollusks.
D)
Q42: What distinguishes a free- living flatworm from
Q43: The venomous sea wasp is classified in
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