Flowers

Flower (flos) or flowers is sexual reproduction structure in flowering plants (Division Magnoliophyta or Angiospermae, "seed plants closed"). In flowers are the reproductive organs (stamens and pistils). Interest in the daily also used to refer to the botanical structure called a compound flower, or inflorescence. Compound interest is a collection of flowers gathered in one essay. In this context, the units that make up the flowers called florets compound interest.

The main functions of flowers produce seeds. Pollination and fertilization take place in the flower. After fertilization, the flower will develop into fruit. Fruit is a structure that carries the seed.

Function flowers

Biological function as a container of interest is the merging of the male gametes (microspores) and female (makrospora) to produce seeds. The process begins with pollination, is followed by fertilization, and continues with the formation of seeds.

Some flowers have bright colors and ecologically functioning as a decoy animal pollination helpers. Some other flowers that produce heat or distinctive aroma, is also to attract animals to help pollination.

Humans has long fascinated by the flowers, especially colorful. Flowers become one of determining the value of a plant as an ornamental plant.

Flower morphology

Stems and flowers are modified leaves. This modification caused by the production of enzymes stimulated by a number of specific fitohormon. Formation of tight flowers are genetically controlled and in many types of environmental changes induced by some, such as low temperature, long exposure, and the availability of water (see article Formation of flowers).
Flowers nearly always symmetrical, which often can be used as a taxon penciri. There are two forms of symmetry based interest form: aktinomorf ( "throwing stars", the radial symmetry) and zigomorf (mirror symmetry). Aktinomorf form more common.

Flower is the perfect flower if you have the means of male (stamens) and female tool (stigmas) together in a single organ. Flowers are so-called transvestite or hermaphrodite flowers. An interest rate is said complete if it has all the main parts of flowers. Four main sections of interest (from the outside in) are as follows:

* Flower petals or calyx;
* The crown of flowers or a corolla is usually thin and can be colored to attract insects that help the process of pollination;
* Male genitals or androecium (from the Greek Andros oikia: man's house) in the form of the stamens;
* Female genitals or the gynoecium (from Greek gynaikos oikia: "woman's house") of the pistil.

Female reproductive organ is the fruit or the leaves on the stem carpellum that there would be fruit (ovary) with one or several seeds will (ovulum, plural ovules) which brings female gametes) in the embryo sac. At the end of the pistil is the stigma or the stigma to receive pollen or pollen. Pistil stalk or stylus serves as a way for pollen to be going to the fruit.

Although the structure of interest described above as the structure of plants is said that "common", plant species showed a highly variable modifications. This modification is used botanical to make connections between plants with one another. For example, the two subclass of flowering plants are distinguished by the number of organs interest: dikotil plants generally have 4 or 5 organs (or multiples of 4 or 5) while the monocot plant has three organs or multiplication.


Source : id.wikipedia.org