Question

Question 8
Aquatic animals in which fertilization occurs in water are said to be:

(a) viviparous without fertilization.
(b) oviparous with external fertilization.
(c) viviparous with internal fertilization
(d) oviparous with internal fertilization.

Answer 1

Ans (b) and (d).
Oviparous animals may fertilize their eggs either externally or internally. External fertilization involves the passage of the sperm to the ova through an ambient medium, usually water.