Question

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

• A. $\begin{array}{ccc}\text{Genus name}& \text{Two Characters}& \text{Class/Phylum}\\ \text{Aurelia}& \text{(a)Cnidoblast}& \text{Coelenterata}\\ & \text{(b)Organ level of organization}& \end{array}$
• B. $\begin{array}{ccc}\text{Genus name}& \text{Two Characters}& \text{Class/Phylum}\\ \text{Ascaris}& \text{(a)Body segmented}& \text{Annelida}\\ & \text{(b)Males and females are distinct}& \end{array}$
• C. $\begin{array}{ccc}\text{Genus name}& \text{Two Characters}& \text{Class/Phylum}\\ \text{Salamandra}& \text{(a)A tympanum represents ear}& \text{Amphibia}\\ & \text{(b)Fertilization is external}& \end{array}$
• D. $\begin{array}{ccc}\text{Genus name}& \text{Two Characters}& \text{Class/Phylum}\\ \text{Pteropus}& \text{(a)Skin possess hair}& \text{Mammalia}\\ & \text{(b)Viviparous}& \end{array}$

Answer 1

The correct option is D

$\begin{array}{ccc}\text{Genus name}& \text{Two Characters}& \text{Class/Phylum}\\ \text{Pteropus}& \text{(a)Skin possess hair}& \text{Mammalia}\\ & \text{(b)Viviparous}& \end{array}$

The characteristics and phylum Pteropus is correct. Pteropus is a genus of bats which have hair on the skin and are viviparous.
Ascaris is a member of the phylum Nematoda which are round worms. They do not have a segmented body.
Salamandra is a member of amphibia. Salamanders do not have tympanum, Although they have greatly reduced middle ears and fertilization is usually internal in them.
Aurelia is a member of Coelenterata, which has tissue level of organization. Its epidermis contains cnidoblasts (stinging cells) for defense and offense purpose.