The embryological support for evolution was proposed by which scientist?

Appearance of ancestral characters in the newborns,such as tail,monstral face,gill slits,multiple mammae,etc.,are known as:

According to Darwinism,the fossils of organisms found in South America most closely resemble the fossils of:

The Biogenetic Law was proposed by:

Which of the given pairs are correct?
$I.$ Wings of insects and birds are homologous organs.
$II.$ Wings of bats and birds are homologous organs.
$III.$ Wings of insects and bats are analogous organs.
$IV.$ Wings of insects and birds are analogous organs.
Choose the correct option.

Two organs which are similar in structure and origin,but not necessarily in function are called: