Evolution of brain is called cephalization. Worms are found to have the simplest brain mechanism and have simple straight forward nervous system i-e head to tail.
Wind, water, animal, and mechanical
A cat is an animal.
Wind, water, animal, and mechanical
W. Penfield has written: 'Speech and brain-mechanisms'
forebrain
It has the mechanisms for controlling our body's reflex activities such as coughing and vomiting
They are, indeed, the most simplest multi-cellular marine animal
yes, they are
Jellyfish. They have 4 hearts and no brain.
yes.
starfish
Jellyfish