Q. $Echidna\ and\ Ornithorhynchus\ \$are the connecting links between
A) Amphibians and aves
B) Mammals and amphibians
C) Reptiles and mammals
D) Reptiles and amphibians
Explanation
Echidna (spiny anteater)and Ornithorhynchus$\$(platypus) are the connecting links between reptiles and mammals.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.