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Life Cycle of a Frog. By Irene So 2 nd Grade. 2 nd Grade State Standard. SCIENCE (Life Sciences) B. Students know the sequential stages of life cycles are different for different animals such as butterflies, frogs, and mice. Stage 1: Egg. The eggs are laid in water or wet places
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Life Cycle of a Frog By Irene So 2nd Grade
2nd Grade State Standard • SCIENCE (Life Sciences) • B. Students know the sequential stages of life cycles are different for different animals such as butterflies, frogs, and mice.
Stage 1: Egg • The eggs are laid in water or wet places • Several thousand eggs are laid at once • The eggs are surrounded by a jelly-like covering to protect the egg • The egg begins as a single cell and continues to multiply
Stage 2: Tadpole • After 21 days, a tadpole emerges from the jelly and attaches itself onto a weed • The tadpole has an extremely long tail • It feeds on algae from anywhere to 3 days to 3 weeks until it can break free into the water
Stage 3: Froglet • After about 5 weeks, the tadpole begins to grow hindlegs and forelegs • Their tail becomes smaller and smaller and they start to develop lungs • The tadpole is able to move freely and catch food
Stage 4: Frog • After 11 weeks, the tail has completely disappeared and the lungs are fully developed • The adult frog will spend most of it’s time on land and eat insects and worms • Eventually, this frog will find a mate and the cycle will begin all over again
