Grow and Development II

Metamorphosis --> The change of forms from one development step to the next one.

Perfect Metamorphosis = egg-> larva -> pupa ->imago.

example : butterfly, bee, mosquito and fly.

Imperfect Metamorphosis = egg-> nymph -> imago.

example : beetle, grasshoppers, termites, and aphid

Metagenesis --> Rotation life or metagenesis occurs between vegettive and generative phase.

 Lumut

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Spora

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Protonema

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--------Gametofit-------

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Anteridium                       Arkegonium

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Spermatozoid-->    Zigot             <--Ovum

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    Sporofit

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   Spora

Fern

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Spora

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-------Protalium-------

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Arteridium                      Arkegonium

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Spermatozoid  -->Zigot<--        Ovum

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    Sporofit

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     Spora

Proces :
        

          Cell divides into 2 cells, 4 cells and divides again. A group of cells namely morula. Cell divides again itu formed hole inside, namely blastosol. This phase is blastula phase. Gastrula is  growing and developing blastula which the symbol are formed 3 layers embrio, namely; ectoderm layers, mesoderm layers, and endoderm layers. 3 layers this will development to many organ. that proces formed gastrula, namely gastrulasi. Organogenesis are formed proces many organ to development  of 3 layers when gastrulasi process.