Suctorial mouth occurs in which of the following living organism?

Butterfly

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Leech

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Taenia

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Cockroach

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Solution

The correct option is B Leech
Hirudinaria is the blood sucking leech. It is blood sucking ectoparasite, it possesses a suctorial mouth. In leech, a triradiate mouth is found at its bottom. The mouth is used for puncturing the skin of the host. These have a toothless mouth to ingest worms or insect larvae, which are swallowed whole.
So, the correct answer is option B.

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(a) Mouth $\to$ Stomach $\to$ Small intestine $\to$ Oesophagus $\to$ Large intestine
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