Question

Which one of the following groups consists of hermaphrodite organisms ?

• A. Leech, tapeworm, hydra
• B. Earthworm, tapeworm, roundworm
• C. Earthworm, starfish, turtle
• D. Leech, nereis, roundworm

Answer 1

The correct option is A Leech, tapeworm, hydra

Leeches and tapeworms are hermaphroditic with reproductive organs of both sexes occurring in the same individual. However, leeches are not self-fertilising but tapeworms are self- fertilising. Hydra can be hermaphroditic or may have separate sexes. Earthworms are hermaphrodites however, roundworms are sexually dimorphic. Starfishes are sequential hermaphrodites and are able to change their sex during their lifetime. Turtles and Nereis are not hermaphrodites.

So, the correct option is 'Leech, tapeworm, hydra'.