Icefish live in the extremely cold ocean near Antarctica.They are the only vertebrates that do not make hemoglobin. They have a large heart and take up oxygen acrosstheir skin, as well as their gills. Why are icefish thoughtto be especially threatened by ongoing ocean warming?
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Icefish live in the extremely cold ocean near Antarctica.
They are the only vertebrates that do not make hemoglobin. They have a large heart and take up oxygen across
their skin, as well as their gills. Why are icefish thought
to be especially threatened by ongoing ocean warming?
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- Land snail and slugs use which of the following for gas-exchange? (mark all that apply) the radula the spiracles the gastric caeca nerdwax the tracheae the mantle the lung the gillsAnimals that have a coelom; Are animals that lack a body cavity Are animals that lack a complete difetice system Are animals that have a true body cavity O Are animals that use diffusion for gas exchangeIn order to flip themselves upright, horseshoe crabs use their: Chelipids Telson Gnathobases Spatula Uropods
- Which of the following is false regarding the gills of fish? O They utilize countercurrent exchange to maximize oxygen uptake. O They have high surface area to volume ratio Their gill rakers often evolve via character displacement. None of the answers are false (they're all true) LSwim bladders in fish and lungs in terrestrial animals have a common evolutionary origin, but have evolved to perform different functions. What is the primary function of swim bladders in fish? They serve as buoyancy control organs. They filter toxins from the water. They allow fish to absorb most of their oxygen. They help in the digestion of food.If fish do not add or remove air from their air bladders the volume of their air bladders _____ when they descend from the surface to greater depths. increases decreases stays they same depends on whether they are physoclistous or physostomous
- In the animal kingdom today, poikilotherms outnumberhomeotherms by a great margin. Why is poikilothermy asuccessful way of life even though poikilotherms sometimesmust compete successfully with homeotherms to survive?In insects, the respiratory system involves structures called tracheal tubes. How do the tracheal tubes provide oxygen to the insects body?As human activities put more and more carbon dioxide (CO2) into the air, the ocean takes up more CO2 and becomes increasingly acidic. Increased ocean acidity makes it more difficult for marine animals to produce their calcium-rich hard parts. List three types of invertebrates that are likely to be adversely affected by an increase in ocean acidity.
- If you Ingest excessive amounts of saltwater, you would eventually experience dehydration and die. How do Marine Organisms survive in a saltwater environment?All vertebrates breathe with either gills or lungs. Which is a property of gills only and not lungs?Lungs ventilated with water occur in some animals—most notably sea cucumbers—but are rare. Why would water lungs be unlikely to be favored by natural selection? Give as many reasons as possible.