Suffering 123 What animal is lotus leaf green in water?

This frog is an amphibian, belonging to Chordata, Amphibia, Anura and Ranidae. Adults have no tail, eggs are laid in water, fertilized in vitro, hatched into tadpoles and breathed through gills. After mutation, adults mainly breathe through lungs and skin. Most frogs reproduce by in vitro fertilization, and fertilized eggs hatch outside the mother's body into tadpoles. Only 10 to 12 frog species in the world have evolved into in vivo fertilization, and some of them will expel fertilized eggs and hatch into tadpoles. Frogs have always been regarded as egg-laying animals, but scientists have found that a frog living in the rainforest of Sulawesi Island in Indonesia can give birth to tadpoles. This frog is the only frog that can "drop tadpoles" among more than 6,000 kinds of frogs in the world.

Frogs are slim and good at swimming. The neck is not obvious, and there are no ribs. The ulna and radius of the forelimb healed, the tibia and fibula of the hind limb healed, the claws could not rotate flexibly, but the limbs were muscular. The most primitive frogs began to evolve in the early Triassic. The earliest frog with jumping action appeared in Jurassic. Because frogs feed on insects and other invertebrates, they must live by the water. There are about 130 species of frogs in China, and almost all of them are experts in exterminating forest and farmland pests.