Question

Anatomical structure that show similar function but dissimilar embryonic and evolutionary background are said to be:-
(a) Vestigial
(b) Homologous
(c) Primitive
(d) Analogous

Answer 1

(d) analogous

Hope, it should help you.

Answer 2

The anatomical structure that shows similar functions but dissimilar embryonic and evolutionary backgrounds are said to be analogous (option-D).

• Vestigial structures are those structures that have lost their function and become useless or rudiment in our body but were used by our ancestors. Example- Wisdom tooth and Vermiform appendix in Humans are the vestigial organs.

• Homologous structures are those which have the same embryonic and evolutionary background (common ancestors), similar structures but show different functions. Example- Bones of  Forelimb of human and bone of forelimb of bird.

• Analogous structures present in different organisms are those that have different anatomical structures and evolutionary backgrounds (ancestors) but have similar functions. Example- Wings of bat and wings of birds.