In planarian flatworms, which organ(s) rids the body of excess water and soluble wastes?

A. Coelom
B. Malpighian tubule
C. Nephridia
D. Protonephridia
E. Kidney


Answer: D

Biology & Microbiology

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Which of the following states (in modern terms) that a diploid cell has two alleles of every gene-one on each homologous chromosome-that are distributed into separate gametes during meiosis?

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The principal components of cell membranes are:

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