It is important that the gills of a crayfish give them a large surface area because it helps the crayfish to breathe. The bigger the surface area, the more oxygen in the crayfishes system.Ê
To acquire more oxygen from water as the large SA of the gills allow more water to pass through and thus more O2 from the water to transfer into the gill-bearing creature's bloodstream for respiration
Without the large surface are, the gills would have to be much larger and that may have prevented the development of the organisms that use gills.
The large feathery structures are the gills.
The gills are feathery so it has more surface area, allowing more gas exchange! By gas exchange u mean to take in oxygen and let out carbon dioxide, right?
Large surface area
A crawdad's gills are located on the underside of its body, attached to its legs. They are feathery in appearance, giving a large surface area for allowing its blood to release carbon dioxide and absorb oxygen from water. The top side of a crawdad, above the gills and legs, is called the carapace, which is the shell on its back.
large surface area.
The gills of a mushroom house the basidia, the cells on which the spores are produced. The gills function as a large surface area over which to produce millions of spores that is exposed air yet protected from large fluctuations in air temperature, moisture, etc.
large surface areas
because in many organisms like fish etc it is an organ for respiration the gills are supplied with capillaries so that the oxygen absorbed can diffuse into the blood it has large surface area so that more oxygen can be diffused in and more co2 can be removed
Gills are the underwater equivalent of our lungs and they need those features in order to extract enough oxygen from the water so that they can breath.
The gill provide a very large surface area for the space that they have.