Question

Which of the following statements is correct about excretion in earthworm?
(i) Earthworm is mainly ureotelic
(ii) Septal nephridia, present on both sides of intersegmental septa of segment 15 to the last, open into intestine,
(iii) Integumentary nephridia, attached to lining of body wall of segment 3 to the last, open on the body surface.
(iv) Different types of nephridia are basically similar in structure.
(v) Nephridia regulate the volume and composition of body fluids

• A. (i) and (iv)
• B. (iv) and (v)
• C. (i), (ii), (iii)
• D. All of these

Answer 1

The correct option is D All of these

Following are the correct statements about the excretion of earthworm:

(i) Earthworm is mainly ureotelic.

(ii) Septal nephritis, present on both the sides of intersegmental septa of segment 15 to the last, that open into the intestine.

(iii) Integumentary nephritis, attached to the lining of the body wall of segment 3 to the last, open on the body surface.

(iv) Different types of nephridia are basically similar in structure.

(v) Nephridia regulate the volume and composition of the body fluids.

So, the correct answer is 'All of these'.