A) Neries
B) Ascaris
C) Taenia
D) Fasciola
Correct Answer: B
Solution :
In life cycle of Ascaris the fertilized egg or zygote undergo, cleavage and becomes rhomboidal. The 16-celled embryo is termed blastula which undergoes a process of invagination and becomes gastrula. It grows in length to become an active juvenile in 10-14 days. For its close resemblance with the nematode genus. Rhabditis found in soil and human faeces the juvenile is also termed rhabditidform larva. The larval stage of Nereis is called trochophore. It differs from a typical trochophor. In the absence of a blastocoel. The sequential larval forms in Fasciola are Miracidium,\[\xrightarrow{{}}\]Sporocyst\[\xrightarrow{{}}\]Redia\[\xrightarrow{{}}\]Cercaria\[\xrightarrow{{}}\]Metacercaria The larval form of Taenia is hexacanth.
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