They have a central nervous system, I think.
Most important appendage which Arthropods use for sensing environment is antenna .Antenna is head appendage used to sense sound chemicals heat etc.
no, i dont know what they are, but they are not arthropods
NO. Arthropods do not have a 4 chambered hearts.
Do arthropods have backbones?No, it is the exoskeleton that holds the arthropod's body together. arthropods are invertebrates, which means they do not have backbones.
Yes, all arthropods have brains.
Roundworms (Nematoda) are related to arthropods because they both molt.Note; Crustaceans are arthropods. :P
respond
The senses of taste and smell respond to chemical stimuli.
It respond to stimuli, by its own life.
No
They have no cells. So they do not respond
Yes.
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yes
stimuli
The refractory period is when a muscle is temporary unable to respond to stimuli refractory period
The refractory period is when a muscle is temporary unable to respond to stimuli refractory period