Wednesday, May 28, 2008

The life cycle of a plant


The life cycle of a plant


Stage 1: Seed is planted
First, a seed is planted in the ground. It needs Water, Oxygen and Warmth (WOW) if it is to successfully develop into a flowering plant.

Stage 2: Seed begins to expand
When a seed begins to expand, we say, germination has begun. The cotyledons store food for the baby plant inside the seed.

Stage 3: roots and leaves develop
When the seed starts to germinate, the first thing to come out is the main root. The skin starts to split and the tiny shoot straightens, carrying the cotyledon[s] with it. The main root gets bigger. Subsequently, leavers developed

Stage 4: Flowers appear
Then, the mature flower contains the parts of the plant which enable it to reproduce.

Stage 5: pistils of flowers receive pollen
In order for the plant to be able to reproduce the flower needs to be pollinated.
*Methods of Pollination
In this point, mature flowers produce pollen which is dispersed through a variety of means.Bees can help flowers make seeds. Bees usually look for pollen and sweet juice. Every flower has pollen, although some flowers don't have sweet juice. A stigma is the female part of a flower that receives the pollen. In other words, when a bee gets pollen from a flower, the pollen sticks to the bee.

Stage 6: fruit forms
Afterwards, seeds form in the ovary and the ovary swells and ripens. A ripened ovary is known as a Fruit, So the pips inside an apple are actually seeds.

Stage 7: Seeds fall
Later, the fruit of the plant will eventually dry out and burst open, releasing the seeds into the environment, where they are dispersed by the wind, insects, and animals such as birds and bats.

Stage 8: plant dies and decomposes
Finally, the fertilized seeds fall to the ground and the lifecycle starts all over again.

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