Question

Choose the correct answers from the alternatives given .
Organisms such as whales and sea turtles which are adapted to all aquatic way of life

• A. Will probably have homologous structures
• B. May very well have analogous structures
• C. Will have similar adaptations but not-necessarily homologous structures
• D. Both (b) and (C)

Answer 1

The correct option is D Both (b) and (C)

Analogous structures are with common functions but without common origin. They are resultant of common habitat that makes these organisms adapt by the evolution of these structures. Hence, both whales and sea turtles because of their common habitat will have analogous structures.

There might be other adaptations too present in them for an aquatic lifestyle. Homologous structures are with different functions and they are present in organisms with a common origin (or ancestor). Organisms in the same habitat with no common origin do not show homologous structures.

So, the correct option is 'Both (b) and (c)'.