Q.Identify the group to which the following animals belong: Chameleon, Draco, Testudo, Hemidactylus.

[!TLDR] Chameleon, Draco, Testudo and Hemidactylus are all reptiles (class Reptilia), within order Squamata (Chameleon, Draco, Hemidactylus) or order Chelonia (Testudo). …

[!ANSWER] All four named animals belong to class Reptilia, though they fall into two different reptilian orders.

Chameleon is a lizard within order Squamata, notable for its ability to change skin colour and its independently mobile eyes. Draco (the "flying" lizard) is also a member of order Squamata, notable for a lateral skin membrane, supported by extended ribs, that allows it to glide between trees. Hemidactylus, the common house lizard (gecko) frequently seen on walls and ceilings, is likewise a member of order Squamata.

Testudo, the tortoise, is different from the other three in belonging to order Chelonia (Testudines), distinguished from Squamata by its characteristic bony shell fused to the vertebral column and ribs, rather than the scaly, limbed body plan of the lizards. …

• Grouping all four animals into the same order — Testudo (Chelonia) is distinct from the other three (Squamata). …