Sunday, 18 November 2012

Frog Life Cycle


A Frog life cycle is different from Chicken.
Frog Life cycle 

Eggs
·         The first stage of a frog's life is the egg. Frogs lay eggs in groups of hundreds or thousands in water. Show children the process of cell division, which takes place approximately two hours after the eggs are laid. Show the eggs at various stages of development and what it looks like when the tadpoles hatch.
Tadpoles
·         The second stage is the tadpole, which looks like a fish and initially has no legs. It swims in the water and consumes algae. Eventually, the tadpole begins to grow legs that will allow it to walk on land and develop lungs that will allow it to breathe on land. Explain to children that other creatures eat tadpoles and why a frog typically lays hundreds or thousands of eggs to ensure some survive.
Froglets
·         At around 12 weeks of age, a tadpole has grown both front and back legs and has only a short tail left. At this stage, it is called a young frog, or froglet. Allow children to observe the differences between tadpoles and young frogs. Explain that the tail gradually absorbs into the body and is almost gone by the time it reaches the froglet stage.
Adult Frogs and Reproduction
·         At around 16 weeks, most frogs become adults and leave the water. At this point, their growth is complete. They soon begin looking for a mate and laying their own eggs. Sperm from a male frog must fertilize eggs from a female frog in order for the additional DNA from the sperm to complete the genetic sequence found in the eggs. Teach children about egg fertilization and why eggs need to be fertilized. 
     Look at the Video below for more!

    Summary:
    Frog has life cycle from Egg --> Tadpoles --> Froglets --> Adult Frog.

    In the next post we will discuss on Butterfly's metamorphosis life cycle process! See you then! 



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