Multicellular Organisms, Brains, and Ambulation

Multi-cellular organisms that move need a nervous system. Furthermore, they tend to develop actual neural masses of nerve cell networks. In contrast, primarily immobile multi-cellular organisms (i.e. plants), don’t bother with this brain game. They save the energy of growing and maintaining a modal nervous system network, as apparently it’s not beneficial enough for their lifestyle.

Interestingly, there is a sea worm which has a two phase life cycle: it will swim/squirm around in it’s early life then settle into an immobile state. The first thing it does after committing to still-life is digest it’s brain.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

w

Connecting to %s