Posterior sucker of Hirudinaria is made of ............. segments.

One

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Three

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Five

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Seven

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Solution

The correct option is D Seven
#Answer is option D.

#Posterior segments of Hirudinaria include anus and suckers which help organism for stick to the substratum.
#Segment number XXVIII to XXXIII (27th to 33rd). It means a total of 7 segments carry the portion of the posterior segment of the organism.

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