When two species of different genealogy come to resemble each other as a result of adaptation, the phenomenon is termed:

Select the correct statement from the following:

Jurassic period of the Mesozoic era characterized by

The extinct human who lived 1,00,000 to 40,000 years ago, in Europe, Asia and parts of Africa, with short stature, heavy eye brows, retreating fore heads, large jaws with heavy teeth, stocky bodies, a lumbering gait and stooped posture was

Which one of the following experiments suggests that simplest living organisms could not have originated spontaneously from nonliving matter

Fossils are most commonly preserved in

Homologous organs indicate the

Coacervates were experimentally produced by______.

Assertion: The earliest organisms that appeared on the earth were non-green and presumably anaerobes.

Reason: The first autotrophic organisms were the chemo-autotrophs that never released oxygen.

What is common to whale, seal and shark?