What is common between parrot, platypus and kangaroo?
What is common between parrot, platypus and kangaroo?
toothless jaws
functional post anal tail
oviparity
homoiothermy.
Solution
Only birds and mammals are homoiotherms. Parrot and platypus have toothless jaws and
show oviparity. Kangaroo show viviparity. Platypus and kangaroo have functional post anal tail.
Related Theory
The platypus (Ornithorhynchus anatinus), sometimes referred to as the duck-billed platypus, is a semiaquatic, egg-laying mammal endemic to eastern Australia. It is a monotreme, and shows oviparity (exception to mammals).