nature

Pestle is what? Detailed analysis of the structure and purpose of the pestle

Table of contents:

Pestle is what? Detailed analysis of the structure and purpose of the pestle
Pestle is what? Detailed analysis of the structure and purpose of the pestle

Video: PESTEL Analysis EXPLAINED | B2U | Business To You 2024, May

Video: PESTEL Analysis EXPLAINED | B2U | Business To You 2024, May
Anonim

A flower is the most amazing part of the majority of representatives of the flora, having various options for form, aroma and color. But how is it that flowers multiply? Each flower has stamens and a pistil - these are its reproductive organs.

What does a pestle consist of?

A pistil is a bud element made up of many carpels. In some plant species, not one pistil can be found, but 2 or more.

Image

Its lower part is usually swollen, dense and is called an ovary, which smoothly passes into a narrower column and stigma. There are also species, for example poppy, in which the column in the pestle is absent, and the ovary immediately passes into the stigma. The upper part of the pestle is designed to capture pollen during pollination, so the shape of the stigma is different - star-shaped, filiform, lobed, cirrus. The height of the column depends on the ability of the stigma to recognize and capture pollen grains.

Where do the seeds come from?

Pestle is a seed storage. Future seeds in the form of ovules are stored in the ovary of a pestle. In the process of pollination, pollen moves along the column deep into the ovary, seeds are formed, and the ovary itself turns into a fetus. That is why it is considered the most important part of the flower.

Image

All flowers are divided into bisexual, same-sex female and same-sex male. The bisexual family includes rye, peas and cherries. Same-sex female plants lack stamens in the bud, and same-sex male plants have no pistil. Among same-sex can be found cucumber, sea buckthorn, poplar. The flowers of these plants can be partly male and partly female.