Echinoderms and Hemichordates Are More Closely Related to Mammals Than

question 8

Multiple Choice

Echinoderms and hemichordates are more closely related to mammals than to crabs and shrimp.Indicate below if this statement is True or False,followed by the correct reasoning for that answer.Check all of the answer choices that apply.

• A) True.Echinoderms,hemichordates,and mammals are all deuterostomes.
• B)False.Crabs,shrimp,echinoderms and hemichordates are all invertebrates and chordates are vertebrates.
• C)True.Echinoderms,hemichordates,and mammals all share developmental characteristics including determinant cleavage and a mouth that forms in the region of the blastopore.
• D) True.This relationship is supported by molecular evidence.

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Random Sample

A sample drawn in such a way that each member of the population has an equal chance of being included.

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The probability distribution of a given statistic based on a random sample, used to infer properties of the population.