Question 34 (1 point) What are the following has/have a nervous system? More than one may be correct. jellyfish sponges flatworms mollusks
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Step 1: Sponges are the only organisms that do not have a nervous system. Show more…
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Which organism has a central brain? A. sponge B. hydra C. flatworm D. fish
Sri K.
Nervous Systems Classify the following characteristics to describe the similarities and differences of cnidarians, planarians, and annelids. Responses may be used more than once. - Exhibit central and peripheral nervous systems - Possess nerve nets composed of neurons that contact each other and contractile cells - Possess nerve cords that extend from the cerebral ganglia outward - Possess a brain and ventral nerve cord containing ganglia in each segment - Possess photoreceptors and sensory cells in the auricles to receive information - Includes jellyfish, which seem to have a slower-acting system as well as a faster-acting one for major responses - Possess cephalization in the form of a ganglion Cnidarians Planarians Annelids
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