Thursday, 28 June 2012

Sexual Reproduction

Sexual Reproduction

Sexual Reproduction involvs following processes.

*Formation of male & female gamates.
*Fusion of male & female gamete to form zygote.
*Development of zygote into the organism.
*The offspring produced by sexual reproduction is not exactly similar to morphology,But in internal   structure   follows similar pattern.

Common Features of sexual reproduction in organisms
A. Juvenile phase (In Animals)
   Period of growth & maturity of organisms prior to sexual reproduction.
B. Vegitative phase (In iv plants)
   Period of growth of a plant before it reaches sexual maturity.

Reproductive phase.

The period during which the organism producesyoung ones.
And plants are categorized into3 based on their lifespan.Annuals,Biennials&perennials.

Annuals: Grows and reproduces with in one year.Eg:Peperomia

Biennials: A plant that lives for 2 years, At first year it shows maximum vegitative growth & in next year it reproduces.Eg:Amorphophalus

Perennials: A plant which lives more than two years. Eg: all type of big trees...

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