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What has a nervous system but no brain 1 earthworm 2 hydra 3 cockroach 4 amoeba?
Wiki User
∙ 8y ago
hydra
Many lower invertebrates lack a brain but do possess a central nervous system. These include jellyfish, starfish, and sponges.
Wiki User
∙ 8y ago
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The nervous system of an earthworm helps them with which process?
regulation study island...
Do protozoa have a nervous system?
An amoeba is considered a "single cell organism" and does not have a brain.
Does the central nervous system consist of the somatic nervous system?
No. Nervous System is comprised of the Central Nervous System (CNS) and the Peripheral Nervous System (PNS) The PNS is comprised of the Somatic Nervous System and the Autonomic Nervous System The Autonomic Nervous System is comprised of the Sympathetic Nervous System, the Parasympathetic Nervous System and the Enteric Nervous System
The portion of the nervous system away from the central nervous system?
peripheral nervous system
What are the two types of nervous system?
They are the central nervous system and the periperhal nervous system.but in the periperhal nervous system ,they are two nervous system divided，。
Do amoeba have nervous systems?
Yes, they do have a nervous system.
What type of nervous system does a earthworm have?
segmented
An earthworm has an anterior ganglion This structure is part of the?
nervous system
What are the four systems of the earthworm?
The digestive, circulatory, muscular and nervous system.
The nervous system of an earthworm helps them with which process?
regulation study island...
What nitrogenous plant compound affecting the nervous system of animal?
amoeba
What organs in an earthworm make up the nervous system?
ventral nerve cord
Do protozoa have a nervous system?
An amoeba is considered a "single cell organism" and does not have a brain.
What is the function of the nerve cord in an earthworm?
The nerve cord in an earthworm performs the same task as the nervous system of any animal. The function of the nervous system is to bring sensory information to the brain, where it is processed. Then, the brain sends signals to the body via the nervous system and those signals cause the animal to move.
Similarities and differences of earthworm and human Nervous system?
The similarities between the earthworm and human nervous system is that they are carbon based. The difference is that the humans nervous system is skeletal while that of the earthworm is not.
Where is the cockroach's brain located?
It does not have a brain, the nervous system is scattered throughout it's body.
Where is the Brian of an earthworm?
The earthworm doesn't have a brain per see, but its nervous system features a brain like pair of cerebral ganglia which is located above and in front of the pharynx.
