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Which of the following are true about Hirudinaria?
(a) Lateral appendages called parapodia help in swimming.
(b) It is monoecious.
(c) Protonephridia help in excretion and osmoregulation.
(d) Nephridia help in excretion and osmoregulation.

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An Intiative by Sri Chaitanya

(a) and (c)

(a) and (b)

(b) and (d)

answer is C.

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Detailed Solution

Hirudinaria is a leech. Parapodia are present in polychaete annelids such as Nereis; they are absent in earthworms and leeches. Nephridia help for excretion and osmoregulation in annelids. Protonephridia are found in Platyhelminthes.

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