What is the difference between the nervous system of a Sponge and a Hydra?



Question 3 options:

The cells in a sponge respond to the environment individually, while a hydra has a true brain


The cells in a sponge respond to the environment individually, while a hydra has a very simple netlike nervous system that allows a coordinated response to a stimulus


The cells in a hydra respond to the environment individually, while a sponge has a very simple netlike nervous system that allows a coordinated response to a stimulus


The cells in a hydra respond to the environment individually, while a sponge has a true brain