Question

Integumentary nephridia of earthworm occurs in

• A. All segments except the first two
• B. First two segments of the body
• C. First fifteen segments
• D. All the segments

Answer 1

The correct option is A All segments except the first two

Integumentary nephridia occur at all segments except first two segments and vary from 200 to 250 per segment. Clittellar segments have 2000 to 2500 each. They are attached to the body wall and are closed internally without nephrostome. They remove metabolic wastes from the blood only and are the smallest in size. So, the correct answer is 'All segments except the first two'.