Q. Which of the following is the largest invertebrate?
Answer: Mollusc
Notes: Molluscs, such as squid, cuttlefish and octopus, are among the most neurologically advanced of all invertebrates—and either the giant squid or the colossal squid is the largest known invertebrate species.

This question is part of 40000+ General Studies MCQ Series Course on GKToday Android app. Question Number: 12 in 20. Lower animals & Invertebrates in above course in App.