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Match List I with List II and choose the correct answer.
List – I List – II
(a) Saccoglossus (i) Hooks and suckers
(b) Pinctada (ii) Nematocysts
(c) Limulus (iii) Proboscis gland
(d) Taenia (iv) Calcareous shell
(e) Gorgonia (v) Book gills
(a) (b) (c) (d) (e)
1. iii iv i ii v
2. iii iv v i ii
3. iii iv ii v i
4. iii v iv ii i

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answer is B.

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Detailed Solution

Proboscis gland is an excretory structure in Saccoglossus (Hemichordata)-
Calcareous shell is seen in Pinctada (Mollusca).
Book gills help in respiration in Limulus (Arthropoda).
Hooks and suckers help in anchorage in endoparasites like Taenia (Platyhelminthes).
Nematocysts help in anchorage, defense and prey capture in Gorgonia (Cnidaria).

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