All the aquatic animals breathe oxygen which is resolved inverter through gills and skin as they don’t have lungs for that purpose. Gills are present on either side of the pharynx. Gills are actually tissues which contain thread-like structure known as filaments. These filaments are involved in ion and water transfer as well as oxygen, carbon dioxide, acid, and ammonia exchange. Each filament contains a capillary network that provides a large surface area for the exchange of gases and ions. Fish exchange gases by pulling oxygen-rich water through their mouths and pumping it over their gills. Therefore marine life is totally a different world as there whole physiology e of breathing is different from that of land animals. So take this ultimate quiz and know more about Respiration in the aquatic creatures.
1. The portion of the skeleton where the cartilage of the cranium converges into the cartilage of the pharynx is ...
A. Gills
B. Oesophagus
C. Splanchnocranium
D. Thorax
2. In Spiny dogfish and other sharks and rays, a____ exists near the top of the head that pumps water into the gills.
A. Ligaments
B. Spiracle
C. Bones
D. Lungs
3. In some fish, capillary blood flows in which direction to the water, causing countercurrent exchange?
A. Same
B. Unidirectional
C. Bidirectional
D. Opposite
4. In bony fish, the pumping of oxygen-poor water is aided by...
A. Lungs
B. Gills
C. Operculum
D. Skin
5. The aquatic generally possess some form of gills in which oxygen exchange takes place by diffusing through the exoskeleton is ....
A. Molluscs
B. Arthropods
C. Fish
D. Reptiles
6. Aquatic insects respire using a ...
A. Plastron
B. Lungs
C. Lungs and gills
D. Exoskeleton
7. Gas exchange in aquatic reptiles occurs in ...
A. Lungs
B. Gills
C. Skin
D. Alveoli
8. Breathing occurs through a change in the volume of the body cavity controlled by contraction of intercostal muscles except....
A. Reptiles
B. Turtles
C. Snakes
D. Lizard
9. Reptiles do not possess of..
A. Diaphragm
B. Alveoli
C. Lungs
D. None of these
10. Gills _______responsible for the genesis of the respiratory rhythm.
A. Brain cells
B. Stem cells
C. Neurons
D. Heart
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