Question

24. Differentiate between homologous and analogous organs. Give one example of each.

Answer 1

Answer

Homologous Organs:

1. They differ morphologically.

2. They have similar internal structure.

3. They develop in related organisms.

4. Stages in the development are similar.

5. They perform different functions.

6. They have similar developmental pattern.

7. Homologous organs show adaptive radiation (divergent evolution).

Analogous Organs:

1. They show superficial resemblance.

2. Their internal structure is quite different.

3. They develop in unrelated organisms.

4. Stages in the development are different.

5. They have similar function.

6. They have dissimilar developmental pattern.

example,

the bones in the front flipper of a whale are homologous to the bones in the human arm. ... The wings of a butterfly and the wings of a bird are analogous.