Most of them lay their eggs in water.
I think you mean 'Why do frogs lay egg?' If so, they lay egg because they are amphibians. And all amphibians lay eggs. Frogs lay their eggs in clusters. Toads lay eggs in a line.
Yes, All amphibians must lay their eggs in water. If they lay them on land their eggs will dry up.
Amphibians lay their eggs in bodies of water.
Some reptiles lay egg in the nest and some reptiles lay egg on the land.
No, they eggs are laid in water.
The Amniotic egg. Remember, reptiles are believed to have evolved from amphibians. Where do amphibians lay there eggs? - The water. Why? because their eggs are soft. The reptiles are the first to lay the amniotic egg which has a hard shell. If an amphibian tried to lay its egg on land, gravity would squad it because an amphibian's egg is jelly like. With the hard shell of the amniotic egg, reptiles have greater change of reproduction.
Amphibians are cold blooded, lay eggs, have the ability to live on land or water, and there are 6,200 species of them.
land
How many eggs amphibians lay in a year varies according to the different species. For example, a frog can lay up to 25,000 egg per year while a salamander may lay about 5,000 eggs per year.
No. This is a characteristic of amphibians. the only mammals to lay eggs, platypuses and echidnas, do not lay them in a jelly-like substance.
Yes, many amphibians, particularly frogs and salamanders, lay eggs with a soft, gelatinous shell.
Amphibians are superficially similar to reptiles, but reptiles are amniotes, that is they lay eggs that are adapted to dry land. Most amphibians lay eggs in water and have a juvenile stage that changes into the adult form.