Question

what stages of the life cycle are free living in necator americanus

Answer 1

Question: What stages of the life cycle are free living in necator americanus?

Answer: First and second stage rhabditiform larvae are free-living.

Early developmental larval stages of the life cycle of necator americanus are free-living, which include the first and second stage rhabditiform larvae. The eggs develop and turn into first-stage free-living rhabditiform larvae. The rhabditiform larvae grow and undergo a second stage followed by the infectious third-stage filariform larvae. The third-stage filariform larvae are infective for the host.