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Select the correct matching of a phylum and its general characters.

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Echinodermata – Water vascular system and proboscis gland

Mollusca – Chitinous cuticle and radula

Chordata – Dorsal nerve cord and ventral heart

Cnidaria – Cnidocytes and comb plate

answer is C.

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Detailed Solution

Chordates are characterised by the presence of a dorsal, single and hollow nerve cord.

Their heart is ventral to the gut. In non-chordates, if present, the nerve cord is ventral, and the heart is dorsal.

Proboscis gland is characteristic of hemichordates.

A chitinous cuticle is present in arthropods.

Comb plates are present in ctenophores.

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