Question

in which organism alveoli are absent?​

Answer 1

Answer:

alveoli are absent in bird, fish..ect..........

Answer 2

In fish alveoli are absent.

• Lungs and gills operate using the same principles.
• Gills, which are branching organs with a large number of capillaries—very tiny blood veins—are located on the side of fish heads.
• Fish must consume oxygen and release carbon dioxide in order to exist. Yet, they have gills rather than lungs.
• Gills, which are branching organs with a large number of capillaries—very tiny blood veins—are located on the side of fish heads.
• When a fish opens its mouth, water flows over its gills, allowing the blood in the capillaries to absorb dissolved oxygen from the water.
• Gills can be found on both sides of the heads of the majority of fish.
• Gills are tissues with a lot of surface area for gas exchange and are composed of feathery structures called gill filaments.

Hence, in fish alveoli are absent.

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