Final answer:
Dorsal roots carry afferent, sensory information to the CNS, while ventral roots carry efferent, motor information from the CNS to muscles and glands.
Step-by-step explanation:
The dorsal/ventral rootlets of the spinal cord carry specific types of information. The dorsal roots carry sensory information, which is afferent, meaning these nerves bring signals from the sensory receptors to the central nervous system. Meanwhile, the ventral roots carry motor information, which is efferent, because these nerves take signals away from the central nervous system to the muscles and glands. This motor information can be part of the somatic nervous system, which controls voluntary movements, or part of the autonomic nervous system, which regulates involuntary functions.