Question

Respiratory organs of whale are
A) Book lungs
B) Lungs
C) Gills
D) Skin

Answer 1

Hint: Whales are the largest mammals. They share the defining traits of mammals such as they breathe air, are warm-blooded, give live birth, suckle their young on milk, and possess hair.

Complete answer:
Let us analyze each option to find out the correct answer.
Option A: Book lungs are the main respiratory organ in most arachnids, a class of arthropods (spiders and scorpions). Each book lung comprises a series of thin plates that are richly supplied with blood. They are arranged in relation to each other like the pages of a book, hence the name book lungs. Book lungs provide an extensive surface for the exchange of oxygen and carbon dioxide with the surrounding air. Therefore, this is an incorrect option.

Option B: Whale is a mammal and mammals breathe through lungs. The whale’s lungs contain more alveoli and are surrounded by two layers of capillaries increasing the surface area for more efficient gas exchange. . Therefore, this is the correct option.

Option C: Gill is a type of respiratory organ found in many aquatic animals, including a number of worms, nearly all mollusks and crustaceans, some insect larvae, all fishes, and a few amphibians. The gill consists of branched or feathery tissue richly supplied with blood vessels, especially near the gill surface, facilitating the exchange of oxygen and carbon dioxide with the surrounding water. Therefore, this is an incorrect option.

Option D: Skin or cutaneous respiration is a form of respiration in which gas exchange occurs across the skin or outer integument of an organism rather than gills or lungs. Cutaneous respiration may be the sole method of gas exchange or may help in ventilation. Therefore, this is an incorrect option.

Thus, the correct answer is option (B) Lungs.

Note: It should be noted that whales cannot breathe underwater like the fish can as they do not have gills. They breathe through nostrils, called a blowhole, located right on top of their heads.