In many modern animals,the ancient archinephric duct became
A) a duct for sperm transport.
B) the urethra.
C) the ureter.
D) the loop of Henle.
E) the whole kidney.
Correct Answer:
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Q1: Terrestrial animals can replace water losses by
Q2: The _ of annelids and molluscs is
Q4: Marine bony fishes
A)gain water by osmosis.
B)absorb salt
Q5: The marine invertebrates,that have surfaces permeable to
Q6: Blood pressure in the capillaries forces a
Q7: The transport maximum is the upper limit
Q8: Sharks maintain osmotic equilibrium with the ocean
Q9: The brackish-water shore crab
A)is a hyperosmotic regulator
Q10: The most likely mechanism operating a contractile
Q11: Ciliated flame cells propel fluids through the
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