Multiple choice

Which of the following is enteronephric nephridia in earthworm?

  1. Pharyngeal and septal

  2. Septal and integumentary

  3. Integumentary and pharyngeal

  4. Integumentary only
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A Correct answer
Explanation

The septal nephridia and pharngeal nephridia dishcarge thier waste products into the lumen of the alimentary canal and not outside. These are knwon as enteronephric types of nephridia. In Pheretima three types of nephridia are present

  1.        Septal nephridia
  2.        Pharyangeal nephridia
  3.        Integumentary nephridia. 

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