Question

Wuchereria bancrofti belongs to phylum
A) Nemathelminthes
B) Platyhelminthes
C) Nematoda
D) Coelenterata

Answer 1

Hint: This is a phylum of triploblastic, unsegmented, pseudocoelomic, and cylindrical or thread-shape worms surrounded by a cuticle and epidermis-like body wall.

Complete answer:
A human parasitic worm (Filariform) that is the chief reason for lymphatic filariasis is Wuchereria bancrofti. Along with Brugia Timori and B. malayi, it is one of the three parasitic worms which may induce lymphatic filariasis by infecting the lymphatic system. A number of mosquito vector species transmit these filarial worms
Now, let us find the solution from the options-
- Cylindrical, extended, slender worm-formed nemathelminthes and tapers at both ends. There is internal cephalization, but there is no distinction between the posterior and anterior areas outside.
- A phylum of comparatively basic bilaterian, unsegmented, smooth-bodied invertebrates is the flatworms or Platyhelminthes. They are acoelomates and have no advanced respiratory and circulatory organs, restricting them to having flattened forms that enable diffusion across their bodies to transfer oxygen and other nutrients. Thus, option B is not the correct option.
- The nematodes or roundworms form the Nematoda phylum, with eelworms being classified as plant-parasitic nematodes. They are a complex animal phylum that inhabits a wide variety of environments. Thus, option C is not the correct option.
- Most coelenterates are marine, often aquatic. The body type is radially symmetrical, diploblastic, and without coelom. The organism has a single opening, the hypostome, enclosed by sensory tentacles that are designed to catch mainly planktonic prey with either colloblasts. Thus, option D is not the correct option.

Thus, the correct answer is option (A) Nemathelminthes.

Note:The infection can evolve into a chronic disease termed Lymphatic filariasis if Wuchereria bancrofti is left untreated. It also induces tropical eosinophilia, an asthmatic disease, in rare circumstances. There is no commercially produced vaccine.