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Imagine a case of reverse evolution – an animal evolved water-breathing from an air-breathing ancestor. Design...

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Biology

Imagine a case of reverse evolution – an animal evolvedwater-breathing from an air-breathing ancestor. Design the gastransport cascade for such an imaginary vertebrate taxon, whichbreathes water, can support O2 consumption rate of at least 50mlO2/kg/min. You do NOT need to concern yourself with HOW thisbeastly transformation occurred, but you DO need to make sure thatEACH STEP of the O2 transport cascade works quantitatively. Showyour calculations for each step of the cascade. Your numbers mustbe feasible and “add up”.

If this animal encountered an air-breathing diving animal of thesame size, metabolic strategy and aerobic capacity, how would theirO2 transport cascades differ qualitatively?

Answer & Explanation Solved by verified expert
4.1 Ratings (701 Votes)
Life originated in anoxia but many organisms came to depend upon oxygen for survival independently evolving diverse respiratory systems for acquiring oxygen from the environment Ambient oxygen tension PO2 fluctuated through the ages in correlation with biodiversity and body size enabling organisms to migrate from water to land and air and sometimes    See Answer
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