2006-12-02 16:28:23 · 5 answers · asked by junw3i 1 in Science & Mathematics ➔ Zoology
They dont have brains.
2006-12-02 16:30:50 · answer #1 · answered by Anonymous · 0⤊ 0⤋
A brain requires a cluster of nerve cells, and plankton are single-celled organisms, therefore they cannot have brains. All functions are controlled by their nucleus.
2006-12-02 16:36:29 · answer #2 · answered by Victoria 4 · 0⤊ 0⤋
Phytoplankton are plants and have no nervous system at all. Zooplankton are very primitive and may have a few nerve cells to aid in environmental response, but nothing close to what could be called a "brain."
2006-12-02 16:34:47 · answer #3 · answered by aviophage 7 · 1⤊ 0⤋
look up wikipedia.org
A very useful free on line encyclopedia
2006-12-02 16:37:56 · answer #4 · answered by gina p 2 · 0⤊ 0⤋
I think there is only one synapse.
2006-12-02 16:32:58 · answer #5 · answered by Tony T 4 · 0⤊ 0⤋