Question

Forelimbs of mammals have a common basic structure or pattern, but are different in
their usage/ function in different animals. They can be called _______ .
i) Homologous organs ii) Analogous organs
iii) Vestigial organs iv) Rudimentary organs

Answer 1

Forelimbs of mammals have a common basic structure or pattern, but are different in their usage/ function in different animals. They can be called homologous organs.

These organs are similar in their morphology, anatomy, genetics and embryology, but their functions are different.

Their structures are inherited from the common ancestor.

Their development pattern at embryo stage, their bones, blood vessels, nerves, muscles are all similar, however, their functions are different in different animals.