Which One of the Following Statements Comparing the Hydrozoans Hydra

question 53

Multiple Choice

Which one of the following statements comparing the hydrozoans Hydra and Obelia is false?

• A)Unlike Hydra,Obelia and most hydrozoans are colonial.
• B)Unlike Hydra,Obelia and most hydrozoans are marine.
• C)In Hydra,the medusa stage is more conspicuous than the polyp stage;the reverse is true for Obelia.
• D)The polyps and medusae of both Hydra and Obelia have gastrovascular cavities.
• E)Both Hydra and Obelia have cnidocytes.

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Definitions:

Less Than

A mathematical expression indicating that one quantity is smaller than another.

Z-scores

Standardized scores that indicate the number of standard deviations a data point is from the mean.

Standard Normal Distribution

A probability distribution that has a mean of zero and a standard deviation of one, commonly used in statistics.

Less Than

A comparative term used to indicate that one quantity or number is smaller than another.