The Main Difference Between Protonephridia and Metanephridia Is That

question 58

Multiple Choice

The main difference between protonephridia and metanephridia is that:

• A) protonephridia are involved in osmoregulation, while metanephridia are involved in excretion.
• B) protonephridia consist of blind flame cells, while metanephridia consist of tubules open at both ends.
• C) protonephridia are involved in excretion, while metanephridia are involved in osmoregulation.
• D) protonephridia consist of tubules open at both ends, while metanephridia consist of blind flame cells.
• E) protonephridia are found in annelids and metanephridia are found in flatworms.

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