Question

61
Which one is an unmatching pair
[a] Acoelomates - Platyhelminthes [b] Dioecious - Aschelminthus
[c] Exoskeleton - Arthropode [d] Bioluminescence- Ctenophora
el Radula - Echinodermata​

Answer 1

Answer:

B is wrong one I guess.

Plz confirm