A student has identified a triploblastic, coelomate, metamerically segmented animal as an earthworm. Which unique character should be verified before identifying that animal as an earthworm?
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a
Presence of radula
b
Presence of clitellum
c
Presence of antennae
d
Presence of spines
answer is B.
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Detailed Solution
Clitellum is a unique feature of earthworm. It helps in the secretion of ootheca.Presence of radula is the feature of a molluscan.Presence of antennae is the feature of an insect like arthropods.Presence of spines is the feature of an echinoderm.
A student has identified a triploblastic, coelomate, metamerically segmented animal as an earthworm. Which unique character should be verified before identifying that animal as an earthworm?