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Match the following items in column I with those in column II.
Column I (Phylum) Column II (Skeleton)
(a) Porifera (i) Calcareous ossicles
(b) Arthropoda (ii) Calcareous shell
(c) Mollusca (iii) Chitinous cuticle
(d) Echinodermata (iv) Calcareous or siliceous spicules
(a) (b) (c) (d)
1. i iii i iv
2. iv ii iii i
3. iv iii ii i
4. iii i iv ii

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answer is C.

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Detailed Solution

Porifera	Calcareous or siliceous spicules
Arthropoda	Chitinous cuticle
Mollusca	Calcareous shell
Echinodermata	Calcareous ossicles

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