Thorn of Bougainvillea and tendril of Cucurbitaare examples of

Organs which have similar origin and developmental plan, but different functions are called

Evolutionary convergence is characterized by

Being all mammals, whale, dolphins, bat, monkey and horse have some common characters but they also show conspicuous differences. This is due to phenomenon of

Explain antibiotic resistance observed in bacteria in light of Darwinian selection theory.