Which one of the following sets of animals share a four chambered heart?

1.  Amphibian, Reptiles, Birds

2.  Crocodiles, Birds, Mammals

3.  Crocodiles, Lizards, Turtles

4.  Lizards, Mammals, Birds

Birds and mammals share one of the following characteristics as a common feature.

1.  Pigmented skin

2.  Pneumatic bones

3.  Viviparity

4.  Warm blooded body

Which one of the following sets of animals belong to a single taxonomic group?

1.  Cuttlefish, jellyfish, silverfish, dogfish, starfish

2.  bat, pigeon, butterfly

3.  Monkey, chimpanzee, man

4.  Silkworm, tapeworm, earthworm

Which one of the following is oviparous?

1.  Platypus

2.  Flying fox (bat)

3.  Elephant

4.  Whale