You discover a new type of marine organism that has the kidneys of a fish but no gills. What affect would the absence of gills have on excretion of nitrogenous waste?

A. No affect. Fish kidneys excrete all
nitrogenous waste.
B. Nitrogenous excretion decreases because
no nitrogen uptake is occurring at the gills.
C. Nitrogenous excretion increases at the
kidneys because it cannot be lost at the gills.
D. No affect. Nitrogenous wastes diffuse
across the skin.


C

Biology & Microbiology

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