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

  1. A
    Aurelia - (a) cnidoblasts (b) Organ level of organization - Coelenterata
  2. B
    Ascaris - (a) Body segmented (b) Males and females distinct - Annelida
  3. C
    Salamandra - (a) A tympanum represents ear (b) Fertilization is external - Amphibia
  4. D
    Pteropus - (a) Skin possesses hair (b) Oviparous - Mammalia

Solution & Step-by-step Explanation

Salamandra (Salamander) belongs to the class Amphibia. It possesses a tympanum that represents the ear, and in many amphibians, fertilization is external (though some salamanders have internal fertilization, this is the most accurate pairing among the choices given in the original context).Aurelia has tissue level, not organ level.Ascaris is unsegmented and belongs to Aschelminthes.Pteropus (Bat) is viviparous, not oviparous.

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In which one of the following the genus name, its two characters and its class/phylum are correctly matched?
A
Aurelia - (a) cnidoblasts (b) Organ level of organization - Coelenterata
B
Ascaris - (a) Body segmented (b) Males and females distinct - Annelida
C
Salamandra - (a) A tympanum represents ear (b) Fertilization is external - Amphibia
D
Pteropus - (a) Skin possesses hair (b) Oviparous - Mammalia

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