While comparing invertebrate groups, many adult tapeworm units contain both male and female reproductive organs. The feature being tested is:

Correct Answer: A

hermaphroditism

Many flatworms, especially parasitic forms like tapeworms, are hermaphroditic. This increases reproductive success when mates are limited inside a host. This MCQ belongs to the Platyhelminthes topic in Animal Diversity-I and is written to test concept understanding rather than memorized wording.