Evolution Question 36
36. What is common between parrot, platypus and kangaroo?
[2007]
(a) Toothless jaws
(b) Functional post-end tail
(c) Ovoparity
(d) Homeothermy
Show Answer
Answer : d
Hints & Solution
(d) Only birds and mammals are homeothermous. The only known living homeotherms are birds and mammals, though ichthyosaurs, pterosaurs, plesiosaurs and non-avian dinosaurs are believed to have been homeotherms. Other species have various degrees of thermoregulation.
