AP BIOLOGY

Detailed explanation-1: -Most amphibians exhibit a two-part (biphasic; bi) complex life cycle, with an aquatic larval stage followed by metamorphosis into a more terrestrial adult (4, 18). However, many lineages have deviated from this pattern to produce a wide range of developmental modes.

Detailed explanation-2: -Amphibians have a complex life cycle. Amphibians lay their eggs in seawater or in moist places because their eggs dry out quickly. The average number of eggs that an amphibian can lay ranges from 2, 000 to 6, 000. There are four stages in the life cycle of amphibians: Egg, tadpole, young frog, and adult frog.

Detailed explanation-3: -What are the 7 main characteristics of amphibians? Amphibians have a backbone, are cold-blooded, need a moist place to live, can breathe air through their skin, externally fertilize their eggs, eat meat, and grow legs when they mature.

Detailed explanation-4: -egg, tadpole, tadpole with legs, froglet, frog To increase the chances of survival, many eggs are laid by the frog. Frogs lay their eggs in masses. Frog eggs can usually be found in calm or static waters.