In flatworms,protonephridia branch throughout the body into bulblike _______________.
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Q29: Marine mammals,like whales,do not drink seawater.
Q30: _ is the final product to be
Q31: All vertebrates other than mammals are ectothermic.
Q32: In mammals,uric acid is produced as a
Q33: All of the following animals lack the
Q35: What is the waste product of fish?
A)Urea
B)Ammonia
C)Uric
Q36: Freshwater fish drink water all the time
Q37: Reptiles,birds,and insects excrete nitrogenous wastes in the
Q38: The _ is the functional unit within
Q39: Most invertebrates,such as the annelid,have nephridia.
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