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What will you look for to identify the sex of the following?

  1. A
    Male shark - Claspers borne on pelvic fins
  2. B
    Female Ascaris - Sharply curved posterior end
  3. C
    Male frog - A copulatory pad on the first digit of the hind limb
  4. D
    Female cockroach - Anal cerci

Solution & Step-by-step Explanation

In cartilaginous fishes (Chondrichthyes), males possess "claspers" on their pelvic fins which are used during copulation.Male Ascaris has a curved posterior end.Copulatory pads in frogs are on the forelimbs.Anal cerci are present in both male and female cockroaches (Anal styles are male-only).

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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

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Animal KingdomAnimal Morphology

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