In evolution.......evolved $1st$ time in annelida
Cephlaization
True coelome
Bilateral symmetry
Triploblastic nature
Most of the unique properties of water result from the fact that water molecules
First respiration arose on earth was
Forelimbs of cat, lizard used in walking; forelimbs of whale used in swimming and forelimbs of bats used in flying are an example of
Darwin's theory of pangenesis says that passage of factors through generation occurs by production in each cell of the body of
Which of the following is vestigial organ in humans