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How many pairs of spermathecal aperture are present in earthworm?
Option: 1
Four pairs of spermathecal aperture
Option: 2
Two pairs of spermathecal aperture
Option: 3
Three pairs of spermathecal aperture
Option: 4
None of these
Answers (1)
Morphology of Earthworm - Genital Openings and Setae
Genital Openings:
- Four pairs of spermathecal aperture are present on the ventrolateral sides of the intersegmental grooves of the 5th-9th segments.
- A single female genital pore is on the mid-ventral line of the 14th segment.
- A pair of male genital pores are present on the mid-ventral line of the 18th segment.
Four pairs of spermathecal aperture are present on the ventrolateral sides of the intersegmental grooves of the 5th-9th segments.
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