Which of the following pairs of organisms are BOTH members of the phylum Arthropoda?
AEarthworm and Housefly
BCrayfish and SpiderCORRECT
CMillipede and Snail
DPrawn and Tapeworm
GCEBiologyClassification of Living Things2024
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Why the answer is B, and why the others tempt you.
Crayfish (class Crustacea) and Spider (class Arachnida) are both members of the phylum Arthropoda, characterized by jointed appendages, an exoskeleton of chitin, and a segmented body. Earthworms belong to phylum Annelida, snails to phylum Mollusca, and tapeworms to phylum Platyhelminthes.
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