Why nephridia in earthworm that are basi | Class 11 Biology Chapter Structural Organisation in Animals, Structural Organisation in Animals NCERT Solutions

Question:

Why nephridia in earthworm that are basically similar in structure classified into three types? Mention the names of each.

Answer:

Nephridia in earthworms are defined as the organs that are for excretion and osmoregulation are tiny coiled tubules. And, are similar in structure that are classified into three types on the basis of their location. These are:

Pharyngeal nephridia: They are present in 3 paired tufts in segments 4 to 6. They discharge excretory matter into the gut by paired ducts.
Septal nephridia: They are present on the anterior and the posterior surfaces of all the septa behind the segment 15. They discharge excretory matter into the gut by septal excretory ducts and superintestinal excretory ducts and opens into coelom by nephrostomes.
Integumentary nephridia: They are attached to the inner surface of the body wall in all the segments except the first two. They discharge waste matter to the exterior by nephridiopores.

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Welcome to the NCERT Solutions for Class 11 Biology - Chapter . This page offers a step-by-step solution to the specific question from Excercise 0 , Question 12: Why nephridia in earthworm that are basically similar in structure classified into three types?....

Why nephridia in earthworm that are basi | Class 11 Biology Chapter Structural Organisation in Animals, Structural Organisation in Animals NCERT Solutions

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