Sunday, September 25, 2005



Pictures courtesy of Corbis.com

A flower is a blossom, that part of the "angiosperm" (classification of plants that have flowers) that is concerned with the reproduction. There is a great variety of floral structure, but the basic organs and structures are similar. Each flower is borne with a stalk or 'pedicel', the tip of which is expanded to form a receptacle that bears the floral organs.

Parts of a Flower:

SEPALS : are first parts of the flower organ and are usually green and leaflike.

PETALS : are found above the sepals and normally are colored and vary greatly in shape.

PERIANTH : is the collective term for the rings of Sepals and Petals known as calyx and
corolla, respectively.

STAMENS : are the reproductive organs comprising the male organs ( androecium)

CARPELS : are the reproductive organs comprising of the female organs (gynoecium)

ANTHER : is that part of the stalk or tip which produces pollen.

OVARY : is a swollen base of a carpel which contains the ovules that later form the seed.

STIGMA : is an expanded structure connected to a style from the carpel.

PISTIL : is the term given to the style and stigma together.


POLLINATION ... FERTILIZATION

Here's how a flower is formed: Basically, when a pollen lands on a stigma, maybe carried there from the back of an insect, it grows a tube into the style and penetrates the ovule ( the egg container) via a hole called the 'micropyle'. Then two male sex cells from the pollen ease their way through the tube to fertilize the egg. An then, a bud (petite un-bloomed flower) is developed and in after a few days this bud would open up into a full bloom flower!
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I hope there is something about these flowers which might have opened some avenues in your imagination and add up to your info wealth!

3 Comments:

  1. kars said...
    wow! para akong nagreview ng biology notes ko noong hig sschool. ",)
    yusop said...
    These are really elegant flowers. They make the heart leap with joy.
    Ms.B said...
    Hi major! They surely are pretty indeed! thanks for visiting! Ganahan ko ana imo profile pict da! pwede pahimo ko? he he

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