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Complex multi cellular organisms need a nervous system to be able to contact the brain and be informed on which tasks need performing.
Hope this helps...
Wiki User
∙ 11y ago
Wiki User
∙ 12y agobecoause they are living organisms and they have organs just like us humans. they also have a spinal cord so the nervous system is connected through a bunch of links
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What are the levels of organization of organisms?
If you are referring to organization of complex multicellular organisms, then level of organization can be as follows: cell>tissue>organ>organ system>organism
How organ systems is most complex and fragile?
Organ systems are most complex and fragile starting with the atoms. The most complex organ systems is the organism. In between are the molecules, cell, tissue, organ, and organ system.
What kind of nervous system do amphibians have?
An extemely developed, complex nervous system.
How do the cells of a multicellular organism function?
The main system that serves the needs of individual cells in multicellular organisms is the circulatory system. This is used to take waste away from individual cells and bring in new fuel such as proteins, glucose, and oxygen.
Why is nervous system considered the most complex of the system of the body?
The nervous system comprises the body's total response mechanism. It receives external information, sends that info to the brain for processing, and sends messages from the brain about appropriate response to the effector muscles and glands.
What are the levels of organization of organisms?
If you are referring to organization of complex multicellular organisms, then level of organization can be as follows: cell>tissue>organ>organ system>organism
What is the only multicellular animal without a nervous system?
a sponge does not have a nervous system
What are four levels of organization of complex multicellular organisms?
1.Tissue 2. Organ 3. Organ system 4. Organism
Is a gastropod's nervous system simple or complex?
The nervous system of gastropods includes the peripheral and central nervous system and this central nervous system consists of ganglia connected by nerve cells. some of gastropods possesses simple and some complex nervous system. EX : 1) snail : Complex nervous system 2) chitons : simple nervous system
How does a multicellular organism obtain oxygen?
multicellular organisms obtain their oxygen through the respiratory system
Which organ system is mostly responsible for generating behavior in multicellular animals?
nervous system
What type of cells are octopus made of?
Octopus cells might all be crudely categorized as eukaryotic cells or animal cells but there is no simple answer because complex multicellular organisms like octopi are made up of thousands of cell types. Octopi have muscles, skin, a nervous system, a digestive system, sensory tissues... etc etc. Every one of those complex organisms will have basic cell types and far more specific cell types.
What is the name for a complex organisms groups of organisms?
System
What is the difference between a human nervous system and a jellyfish nervous system?
A human nervous system is much more complex. Unlike a human a jellyfish does not have a central nervous system.
What complex system does your body have?
the complex system of the human body are nervous system, skeletal system, mascular system and circular system.
What system controls endocrine system?
Pituaritry gland
How do they keep the nervous system healthy?
Complex vitamin B. Every B vitamin has something to do with the nervous system.
