Multiple choice Which of the following is not a hermaphrodite? Liver fluke Hydra Blood fluke Earthworm Reveal answer Fill a bubble to check yourself C Correct answer Explanation The blood fluke (Schistosoma) is dioecious with separate male and female organisms, unlike most other flukes. Liver fluke, hydra, and earthworm are all hermaphrodites possessing both male and female reproductive organs.