Q. What will you look for to identify the sex of the following?
A) Male shark - Claspers borne on pelvic fins
B) Female Ascaris - Sharply curved posterior end
C) Male frog - A copulatory pad on the first digit of the hind limb
D) Female cockroach - Anal cerci
Explanation
[Solution from source] Male sharks bear claspers on their pelvic fins, used to transfer sperm. In Ascaris it is the male whose posterior end is sharply curved, the copulatory pad of male frogs is on the first digit of the fore limb, and anal cerci are present in both sexes of cockroach (anal styles are male-only). Answer (1).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.