phelanphys3e

REVIEW & REHEARSE 23 NERVOUS and MOTOR SYSTEMS

Animal nervous systems have several principal features, which include all of the following except:

a) they coordinate the organism’s long-term growth and development.
b) they receive input from the world around the organism.
c) they initiate responses to the information they receive from the world, when necessary.
d) they process the information from the world that an organism receives.
e) All of the above are principal features of animal nervous systems.

Which of the following statements about plants and nervous systems is correct?

a) Plants can feel pain in their trunks and stems, where they have neurons, but not in their leaves.
b) Plants can feel pain in their leaves, where they have neurons, but not in their trunks or stems.
c) Plants can feel pain because they have a nervous system that extends throughout their tissues.
d) Plants can feel pain in their trunks, where they have neurons, but not in their stems or leaves.
e) Plants cannot feel pain, because they do not have nervous systems.

What is the difference between a nerve and a neuron?

a) A nerve is a bundle of neurons, whereas a neuron is a single cell.
b) Nerves have synapses with muscle cells, whereas neurons have synapses with other neurons.
c) Nerves have dendrites that can be modified into sensory cells, whereas neurons do not have dendrites.
d) “Nerve” is the name given to nervous system cells specialized for receiving and transmitting information, whereas “neuron” describes a nerve cell in humans.
e) There is no difference. They are different words for the same structure.