What will you look for to identify the sex of the following?
Female Ascaris - Sharply curved posterior end
Male frog - A copulatory pad on the first digit of the hind limb
Female cockroach - Anal cerci
Male shark - Claspers borne on pelvic fins
Reproduction in chondrocytes -
Male bear pelvic fins having claspers. Fertilization is internal and are mostly viviparous.
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Class chondrocytes (cartilaginous fish) -
Marine and predaceous. Mouth is located ventrally and teeth are modified, placoid scales directed backwardly. Air bladder is absent.
- wherein
Eg. Torpedo, Scoliodon, Pristis, Petromyzon.
Shark belongs to cartilaginous fish
Option 1)
Female Ascaris - Sharply curved posterior end
Incorrect
Option 2)
Male frog - A copulatory pad on the first digit of the hind limb
Incorrect
Option 3)
Female cockroach - Anal cerci
Incorrect
Option 4)
Male shark - Claspers borne on pelvic fins
Correct