Question

Which animal has unpaired lungs
A.Monkey
B.Whale
C.Some frogs
D.Some snakes

Answer 1

Hint: Some animals like amphibians will exchange gases through their moist skin, Fishes respire through gills whereas mammals, reptiles, and birds have specialized organs called lungs. Our respiration system is made up of mouth and nose, the pharynx is the tube, and another tube called the trachea, and our lungs.

Complete step by step answer: Monkey- In humans and as well as large and small mammal species, the respiratory tract will divide at the bifurcation of the trachea and give right and left lung. In both rhesus and humans, the left lung is divided into 2 distinct lobes.
Whale- Whales are mammals so they breathe out of the water like us humans. So, their respiratory system works similarly to humans but they have an adaptation to their underwater environment. When the animal inhales air the air passes through the blowhole then to the trachea and lastly to the lungs.
Frogs- The frog has three respiratory surfaces on its body which are used to exchange gases with the surroundings. The lungs, the skin and there is the lining on the mouth too. A frog breathes similar to humans by taking air through their nose and it goes to the lungs.
Snakes- Snakes have only one right lung but some species have two- four lungs, there is a semi-developed left lung and a pair of tracheal lungs. The lung difference in the snake is that they have two separate lung chambers in the right lung.
Hence the correct option is D, Some snakes.

Note: Few snake species have only one right lung bronchus. Whereas in mammalian lungs each alveolar duct ends in a passage known as an atrium, which then leads to several alveolar rounded sacs. Each alveolar sac is studded with several air sacs or alveoli. Alveoli are the site of respiration.