What have a nervous system?
fur seals viruses animals jellyfish bacteria ducks mammals phytoplankton
A B C D E F G H
Jellyfish and insects are invertebrates.
jellyfish have a nervous system
What have a nervous system? (A) fur seals (B) viruses (C) animals (D) jellyfish (E) bacteria (F) ducks (G) mammals (H) phytoplankton