NEET Biology question
Arrange the external openings and their segmental numbers of *Pheretima.*
Column-I: (A) Male genital apertures (B) Dorsal pores (C) Spermathecal apertures (D) Nephridiopores
Column-II: (1) Between 12/13 to last segment (2) From 3rd to last segment (3) 18th segment (4) From 5/6 to 8/9 segment
Answer: (A)
Solution
The male genital apertures open on the 18th segment (A-3); dorsal pores occur from around segment 12/13 up to the last segment (B-1); spermathecal apertures open
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