Starting with the simplest and moving towards more complex,what is the correct evolutionary sequence of animals in regards to the complexity of their nervous systems?
A)sponges - hydras - planarians - annelids - molluscs - fish
B)sponges - planarians - hydras - annelids - molluscs - fish
C)hydras - sponges - planarians - annelids - molluscs - fish
D)sponges - hydras - planarians - molluscs - annelids - fish
E)annelids - sponges - hydras - planarians - molluscs - fish

Question

Quizplus · Accepted Answer

Sponges have the simplest nervous system, followed by hydras, planarians, annelids, molluscs, and fish.

Starting with the Simplest and Moving Towards More Complex,what Is