Question

An important evidence in favour of organic
evolution is the occurrence of
(a) analogous and vestigial organs
(b) homologous organs only
(c) homologous and analogous organs
(d) homologous and vestigial organs

Answer 1

Organic evolution is characterized by occurrence of -

(d) homologous and vestigial organs

Organic evolution refers to modification in genetic material of organism for adaptation to environmental changes.

Homologous organs are the one with same structure or origin but difference in their function. Example include bird's wings and cat's legs.

Vestigial organs are the ones which were useful for the organism earlier but now have lost their significant use or advantage. Though they are still present. Example ear pinna, nictating membrane.