Which Characteristic Is Shared by Cnidarians and Flatworms

question 43

Multiple Choice

Which characteristic is shared by cnidarians and flatworms?

• A) dorsoventrally flattened bodies
• B) radial symmetry
• C) a digestive system with a single opening
• D) a distinct head

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Definitions:

Years

Units of time equal to 365 or 366 days, used in the Gregorian calendar to measure the duration of a long period.

Mammography

An X-ray examination of the breast, used to detect and diagnose breast diseases like cancer.

Compressed

The state of being pressed into less space or condensed, often used in the context of data or materials.

Radiation

The emission and diffusion of rays; a product of X-ray and radium.