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Members of which of the following phyla have the most species that parasitize humans? a.Porifera b.Mollusca c.Echinodermata d.Platyhelminthes



Answer :

The Platyhelminthes has the most species that parasitize humans.

Answer: The correct answer is-

d. Platyhelminthes.

Platyhelminthes is a phylum of invertebrates that includes flatworms such as Tapeworms, Flukes. Most of the members that act like parasite belong to the class Tremada ( which includes flukes) and Cestoda ( which includes tapeworms) within this phylum.

They can parasitize human beings ( for example- Fascioliasis is an infectious disease caused by Fasciola hepatica, which is commonly called liver fluke).

Thus, option d) is the right answer.

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