Question

By studying analogous structures , we look for.............

• A. Similarities in appearance and function but difference in structure
• B. Similarities in appearance but difference in function
• C. Similarities in organ structure
• D. Similarities in cell make up

Answer 1

The correct option is A Similarities in appearance and function but difference in structure

Analogous organs are those organs which have the same function but are quite different in their fundamental structure and embryonic origin. For example, the wing of an insect and the wing of a bird are analogous organs. Both these organs are used for flying in the air but they re very different in structure. An insect wing is an extension of the integument whereas a bird wing is formed of limb bones covered with flesh, skin, and feathers. Each has evolved from a separate ancestral population as a means of a more efficient mode of locomotion. Similarity developed in distantly related groups as an adaptation for the same function is called analogy or convergent evolution.

Thus, the correct answer is option A.