25 Q 12

Briefly describe the reproductive behavior of frogs. In what important ways do frogs and salamanders differ in their reproduction?

Frogs reproduction occurs during warm seasons. When the eggs are mature, females enter the water and are clasped by males in a process called amplexus in which eggs are fertilized externally. As a female lays eggs, a male discharges sperm over the egss to fertilize them. Eggs are laid in large masses usually anchored to vegetation. Eggs of most salamanders are fertilized internally; a female recovers in her cloaca a sperm packet or spermatophore deposited by a male on a leaf or stick. Aquatic species lay their eggs in clusters or stringy masses in water.

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