Diploblastic Animals, Such as Cnidarians and ____, Have Only Two

question 51

Multiple Choice

Diploblastic animals, such as cnidarians and ____, have only two germ layers, ectoderm and ____.

• A) sponges; ectoderm
• B) sponges; mesoderm
• C) ctenophores; mesoderm
• D) ctenophores; endoderm
• E) ctenophores; metaderm

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Definitions:

Variable

A characteristic of interest for the elements.

T Test

A statistical test used to compare the means of two groups to determine if there is a significant difference between them.

ANOVA

Analysis of Variance, a statistical method used to compare means of three or more samples.

F Ratio

A statistical value used in the analysis of variance (ANOVA) to determine the ratio of variation between sample means to variation within the samples.