Q. Thorns of Bougainvillea and tendrils of Cucurbita are examples of :
(a) Vestigial organs
(b) Retrogressive evolution
(c) Analogous organs
(d) Homologous organs
Solution :
Correct option : D Thorns of Bougainvillea and tendrils of Cucurbita are examples of homologous organs. They arise from the axillary buds. they perform different types of functions. The thorn is for providing protection against the grazing animals. The tendrils help in providing support while climbing. They are anatomically similar. But the functions are different.