Question

Hand of man, wings of bat and flippers of seal represent?

• A. Vestigial organs
• B. Analogous organs
• C. Evolutionary organs
• D. Homologous organs

Answer 1

The correct option is D

Homologous organs

The correct option is (D).

The explanation for correct option:

1. Closely related species with organs that are anatomically similar but functionally different are called homologous organs.
2. Humans, bats, and seals belong to the class Mammalia.
3. The anatomical structure of the forelimbs of all the tree animals are similar but they’re functionally different as:
   1. In humans, hands perform the function of daily chores along with gripping and grasping.
   2. In bats, wings are meant for flying.
   3. In seals, flippers are for propulsion.
4. Thus, performing different functions.

The explanation for incorrect options:

Option A:

1. Organs that are functionally dormant but still present in the body of living organisms are called vestigial organs.
2. These organs were once functionally active in ancestral species but are of no use at present.
3. None of the organs mentioned in the question are vestigial.

Option B:

1. Non-related species whose organs do not share any anatomical similarity but perform similar functions are called analogous organs.
2. These are mostly found in species that lie under the spectrum of convergent evolution.

Option C:

Organs modifying their anatomical, morphological and functional abilities over time to become more efficient and adaptable comes under the evolution of organs in living organisms.

Final answer:

Hence, the hands of man, wings of bats, and flippers of seals are homologous organs.