Multiple choice

The highest degree of polymorphism is found in

  1. protozoa

  2. cnidaria

  3. platyhelminthes

  4. arthropoda
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A striking feature of cnidarians is the high degree of polymorphism often seen in a single species. Two basic types—sessile polyp and free-swimming medusa-occur.

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