Question

In modern elasmobranchs the fertilization is

• A. Always external
• B. Always internal
• C. May be external or internal
• D. None of the above

Answer 1

The correct option is B Always internal

All sharks are modern elasmobranchs and fertilized internally. Due to this mode of fertilization, fewer numbers of large young ones are produced that spend the vulnerable portion of development inside the relatively safe refuge of female's uterus until they are born ready to evade predators and competitors, enhancing their chance of survival. Hence, option B is correct.