1.) In most species of frogs, fertilization is external. The male frog grabs the female's back and fertilizes the eggs as the female frog releases them (Figure 2.2B). Rana pipiens usually lays around 2500 eggs, while the bullfrog, Rana catesbiana, can lay as many as 20,000
2.)Frogs can breed from between two and three years old. They often return to the pond where they were spawned, and males attract females by croaking. Breeding involves the male attaching himself to the back of the female by grasping her under the forelegs, where he stays until she lays her eggs.
3.)The amplexus embrace between frogs stimulates the female to release her eggs which she expels in the form of a gelatinous mass. The contractions from the female thereby stimulate the male to pray the eggs with sperm, fertilizing them.
4.) indi ko na po alam srry
5.)As we know, frogs lay eggs in water, and the eggs then fertilize and grow into tadpoles which grow into frogs. The female frog releases eggs in the water and at the same time the male frog releases sperms in the water. ... So, external fertilization occurs in them.
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Answer:
1.) In most species of frogs, fertilization is external. The male frog grabs the female's back and fertilizes the eggs as the female frog releases them (Figure 2.2B). Rana pipiens usually lays around 2500 eggs, while the bullfrog, Rana catesbiana, can lay as many as 20,000
2.)Frogs can breed from between two and three years old. They often return to the pond where they were spawned, and males attract females by croaking. Breeding involves the male attaching himself to the back of the female by grasping her under the forelegs, where he stays until she lays her eggs.
3.)The amplexus embrace between frogs stimulates the female to release her eggs which she expels in the form of a gelatinous mass. The contractions from the female thereby stimulate the male to pray the eggs with sperm, fertilizing them.
4.) indi ko na po alam srry
5.)As we know, frogs lay eggs in water, and the eggs then fertilize and grow into tadpoles which grow into frogs. The female frog releases eggs in the water and at the same time the male frog releases sperms in the water. ... So, external fertilization occurs in them.