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Hello.
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So the question is you discover our species of animal never before described.
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It has bilateral symmetry, no body cavity, no gut and was a parasite in the gut of shark.
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This new species belongs to the phylum and our options are option a nideria, namatoda, platy halmens and anhylida.
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So this new species have the characteristics like bilateral symmetry and, and it has no body cavity, no body cavity, no gut, and it is a parasite in the gut of the shark.
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So these will be the characteristic of this new species.
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So let's come to the option number a, naderia.
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See, naderians are basically they have the radial symmetry, okay.
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So naderians, they have radial symmetry.
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So this cannot be our answer because this new species has bilateral symmetry.
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So we will rule this out.
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We will rule it out because so let put put across over it.
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And the next one is nematodes, nematoda.
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So next phylum is nematoda.
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See they have bilateral symmetry.
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They are bilateral, but they also have a pseudo -colum.
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They lack a true body cavity but they have a body cavity fluid filled body cavity.
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So they basically they have body cavity...