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PLANT PARTS AND FUNCTIONS AS REPRODUCED PLANTS: THE FLOWER FLOWER

Flower

flowering plants in the reproductive tract is the flower.

is composed of four bodies: accessories called

two: the calyx and the corolla.

called essential

And two: the androecium and gynoecium.

usually given the name of showy flower parts with color.

In some cases they may miss one or two vital organs.

The flower usually is placed at the end of a shaft called the floral stalk, you can be alone or assembled with other, forming an inflorescence solitary or clustered.

The top of the stretch sole flower stalk forming el llamado receptáculo, donde se insertan los cuatro ciclos florales: el cáliz, en la parte exterior, la corola, el androceo y el gineceo.

El cáliz

Está formado por hojas modificadas llamadas sépalos, generalmente son verdes.

Pueden estar separados entre si como en la rosa o soldados unos con otros como en la arveja.

Puede ser regular cuando todos los sépalos son iguales como en la rosa o irregular, cuando no son iguales como en el Taco de reina.

La corola

Esta protegiendo a la flor, esta formada por hojas modificadas llamadas pétalos, generalmente de color, although sometimes they are green and in the vine.

The petals can be separated (dialipétala) each other as in the pink, or soldiers (gamopetalous) and the margarita.

The petals may be different in shape, color and size each other are called abnormal, and some have spurs and the Taco Queen. Colors

The flowers usually have brightly colored petals, give off different scents and have liquid sugar, which attracts insects. Within

flowers is an increase in temperature favors the evaporation of essential oils in their tissues and give each its distinct odor.

androecium is formed by stamens are the male organs of the plant.

The yarn consists of filament and anther. Strand

: a support filiform, flexible and cylindrical. Anther

: is the core of the yarn, and is attached to the filament. The anthers are composed of two parts, there occur in pollen grains.

The anther consists of two symmetrical parts called the pollen sacs. Gynoecium

is the female organ, is at the center of the flower. This consists of one or more modified leaves, called carpels.

The gynoecium consists of: Ovarian

: enlarged part, as a balloon that is inserted into the receptacle of the flower.

Style: Column hollow or filled with spongy tissue, of varying lengths.

Stigma: Part widened, located at the end of the style.

Stigma sugary liquid secreted, as the plant that hold the pollen grain and feed. The ovary is an essential part of the gynoecium, the eggs are.

sexual elements of the plant

these elements in flowering plants are the pollen grain and egg.

Pollen is the male sexual element of the flower produced by the pollen sacs found in the anthers.

is presented in the form of fine powder, usually yellow, but may have different colors.

The egg is the female sexual element contained in the flower ovary.

function of the flower

The essential function is to form flower seed that will lead to another plant of the same species. Pollination

Named to the transfer of pollen grain from the anther to the stigma. Can be direct or indirect.

Direct :

When the pollen falls on the stigma of the same flower, which is only possible in the hermaphrodite flowers, ie have androecium and gynoecium.

indirect or cross :

is the most common pollen from one flower falls on the stigma of another of the same species.

For the pollen from one flower reaches the stigma of another, involving a variety of external agents: wind, insects, birds, water and man.

Wind (anemophily) : Pollen is usually very light, very abundant and some Sometimes the grains have two air-filled blisters, which make it even lighter. Video

forms of pollination:

Insects (entomophilous) : It is made by bees and butterflies. The colorful flowers give off scents that attract insects, they suck the nectar and pollen sticks to your body and your legs, which have in other flowers they visit.