How do exchange of gases takes place in fish?
Draw a diagram of breathing organs in fish?
मछलियों में गैसों का आदान-प्रदान कैसे होता है?
मछली में सांस लेने वाले अंगों का आरेख बनाएं?
Kindly give answer in English language only!
Answers
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Respiration in Fish
Respiration in fish takes place with the help of gills. Most fish possess gills on either side of their head. Gills are tissues made up of feathery structures called gill filaments providing a large surface area for exchange of gases. A large surface area is crucial for gas exchange in aquatic organisms as water contains very little amount of dissolved oxygen. The filaments in fish gills are organized in rows in the gill arch. Each filament comprises lamellae, which are discs supplied with capillaries. Blood moves in and out of the gills through these small blood vessels. Though gills in fish occupy only a small section of their body, the extensive respiratory surface produced by the filaments renders the whole organism with efficient gas exchange.
Explanation:
Oxygen and carbon dioxide dissolve in water, and most fishes exchange dissolved oxygen and carbon dioxide in water by means of the gills. ... Water taken in continuously through the mouth passes backward between the gill bars and over the gill filaments, where the exchange of gases takes place.
