Roots
Roots are
located at the lowest end of the plant, usually underground. The roots look
like strings that are intertwined in random webbing. With fibrous root systems,
the roots are thin and delicate but each system has several roots. A taproot
system has only a few actual roots, but the roots are thick and hardy. The
purpose of all root systems is to carry water and nutrients from the soil to
the plant and to offer stability in the ground.
Stems
Stems are
what create the height or length of a plant to allow it to reach sunlight. The
stems connect the roots with other parts of the plant and serve as
transportation for nutrients and water between the roots and other parts. Stems
on vegetables, smaller leafy plants and flowers are usually thin, but stems can
also grow to be quite large, as with trees, shrubs and thick vine plants.
Leaves
The leaves
of a green plant are attached to the stem with a smaller stem-like branch
called a petiole. They are the part of the plant that facilitates
photosynthesis, which is a process through which the plant uses sunlight,
carbon dioxide, chlorophyll and the nutrients from the root system to create
glucose, a food for the plant, and releases oxygen into the air. Leaves can be
simple, with single leaves, or compound, where several leaves are attached to
the same petiole.
Flowers
Flowers are
typically seen as attractive decoration for plants, but they are actually the
site of reproduction for the plant. They are an important part of the life
cycle of the plant, as the plant itself has only the intent of spreading itself
to create more plants. Flowers are made up of male and female parts. The female
part is the pistil, which is made up of the stigma, style and ovary. The pistil
is surrounded by stamens, the male part of the flower, which are made up of
anthers and filaments. The stamens produce pollen, which lands on flowers'
pistils and fertilize the flowers by traveling into the lowest part of the
pistil, the ovary. Once fertilization occurs, the ovary produces seeds. It
grows and swells as the seeds mature, eventually becoming the fruit of the
plant.
Fruit
During the
seed production process, the flower's ovary swells as seeds are produced. The
ovary itself forms the fruit of the plant. The fruit is made up of the seed,
which is a plant embryo, and the protective outer layer, the fruit itself. The
fruit contains the seed until the fruit is consumed or it decomposes. If the
fruit is consumed by a human or other animal, the seeds are spread through
animal digestion or human intervention.
Bibliography:
http://www.ehow.com/list_7329842_parts-green-plants.html
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·
ROOTS
·
STEM
·
FRUIT
·
LEAVE
·
FLOWER
·
SEEDS
BY: Matias
BY: Matias
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