Which Is True About the Invertebrates

question 52

Multiple Choice

Which is true about the invertebrates?

• A)They are all deuterostomes.
• B)Among these animals, the initial indentation in the embryonic ball always becomes the anus.
• C)All invertebrates share bilateral symmetry.
• D)They include the simplest living animals.
• E)Invertebrates only have a simple backbone.

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Definitions:

Randomness

The lack of pattern or predictability in events.

Probability

A measure indicating how likely it is that an event will occur, expressed as a number between 0 (impossible) and 1 (certain).

Distribution

Refers to the way in which values of a variable or a set of data are spread or distributed across possible values or intervals.

Probability

An assessment of the chance of an event taking place, denoted by a number from 0 to 1, with 0 signifying that the event is not possible and 1 signifying that the event is guaranteed to happen.