In which one of the following the genus name, its two characters and its class/phylum are correctly matched?
| Genus name | Two characters | Class/Phylum |
|---|---|---|
| 1. Aurelia | (a) Cnidoblasts (b) Organ level of organization | Coelenterata |
| 2. Ascaris | (a) Body segmented (b) Males and females distinct | Annelida |
| 3. Salamandra | (a) A tympanum represents ear (b) Fertilization is external | Amphibia |
| 4. Pteropus | (a) Skin possesses hair (b) Oviparous | Mammalia |
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