Question

an axon lacking a myelin sheath is said to be what?
unmyelinated
a dendrite
myelinated

Explanation:

Axons can be either myelinated or unmyelinated. Myelin sheath is a fatty - insulating layer. An axon without it is unmyelinated. A dendrite is a different part of a neuron and myelinated refers to having a myelin sheath.

Answer:

Unmyelinated