Question

Draw and explain the process of respiration in fish?
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Answer 1

Answer:

Fish use their gills to help them breathe. The majority of fish have gills on both sides of their heads. Gills are tissues made up of gill filaments, which are feathery structures that provide a wide surface area for gas exchange.

Explanation:

• Because water contains very little dissolved oxygen, a wide surface area is essential for gas exchange in aquatic organisms.
• The gill arch organises the filaments of fish gills into rows.
• Each filament is made up by lamellae, which are capillary-supplied discs. These microscopic blood veins carry blood into and out of the gills.
• Despite the fact that fish gills only cover a small portion of their bodies, the broad respiratory surface formed by the filaments allows for effective gas exchange across the entire organism.