Final answer:
The sensory fiber of unipolar neurons gives rise to dendrites. These sensory neurons transport impulses from the periphery to the CNS, and their dendrites are part of the peripheral nervous system.
Step-by-step explanation:
The fiber of unipolar neurons that gives rise to dendrites is the sensory fiber. These neurons are categorized as sensory because they are responsible for transmitting sensory information from the body's periphery to the central nervous system. Unipolar neurons, also referred to as pseudo-unipolar neurons in humans, have a common process that splits into two branches, acting as an axon and dendrite.
In the peripheral nervous system, a bundle of axons is correctly referred to as a nerve. The sensory (or afferent) neurons carry nerve impulses from sensory receptors in various tissues to the central nervous system, with their cell bodies typically found in ganglia. Therefore, the dendrites of unipolar sensory neurons are involved in the peripheral sensory reception and are part of the peripheral nervous system.