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In which one of the following, the genus name, its two characters and its class/phylum are correctly matched?

1. Genus name: Ascaris, Two characters: (i) Body segmented, (ii) Males and females distinct, Class/phylum: Annelida
2. Genus name: Salamandra, Two characters: (i) A tympanum represents ear, (ii) Fertilization is external, Class/phylum: Amphibia
3. Genus name: Pteropus, Two characters: (i) Skin possesses hair, (ii) Oviparous, Class/phylum: Mammalia
4. Genus name: Aurelia, Two characters: (i) Cnidoblasts, (ii) Organ level of organization, Class/phylum: Coelenterata

Correct answer: Genus name: Aurelia, Two characters: (i) Cnidoblasts, (ii) Organ level of organization, Class/phylum: Coelenterata

Solution

Aurelia is a jellyfish belonging to Coelenterata (Cnidaria), which characteristically has cnidoblasts and an organ-level organization. The other options mismatch either the phylum or the biological traits listed.

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