Impulses are conducted by myelinafed axons by jumping from node to node in a process called a(n):
a. action potential.
b. excitatory postsynaptic potential.
c. saltatory conduction
d. monosynaptic reflex
e. depolarization.

c. saltatory conduction  

Explanation:

An electrical impulse begins at the upper end of the neuron. This area is known as the axon ridge, and this ensures that the electrical impulse will travel in one direction only.

Through the myelin, the electrical impulse jumps from one node to another, instead of having to travel the entire distance from the axon. This type of signal conduction is called saltatory conduction.

Saltatory conduction speeds up impulse movement, as some axons may be up to one meter long. With this, the body achieves fast and efficient nerve conduction, and it is what allows you to react so quickly during reflexes.

its the cell wall and the they are unique to plant