Which of the following is incorrect match?
Devonian period -Age of fishes
Carboniferous period -Age of amphibians
Ordovician period -Age of invertebrates
Cretaceous period -Age of reptiles
Which set includes only analogous organs?
Common origin of man and chimpanzee is best shown by
A substance (low molecular weight protein) produced by host cells in response to viral infection and protect other cells against further viral infection is
In the developmental history of mammalian heart, it is observed that it passes through a two-chambered fish-like heart, three-chambered frog-like heart and finally four-chambered stage. To which hypothesis can this above cited statement be approximated
Replacement of original hard parts or even the soft tissues of the organisms by minerals is known as