Fall is here. What's falling? Plants are adapting to the annual environmental temperature change. Plants are beautiful. Study the plant form.
The plant body has a hierarchy of organs. Plants, like most animals, and have organs composed of different tissues, which in turn are composed of cells. A tissue is a group of cells with a common function, structure, or both. An organ consists of several types of tissues that together carry out particular functions. There are a few observable features of the plant structure.
The three basic plant organs are the roots, stems, and leaves.
The basic morphology, or form, of vascular plants evolutionary history as terrestrial organisms is that they inhabit and draw resources from two different environments. Plants are, simultaneously, above ground, and below ground. Plants must absorb water and minerals from below the ground. At the same time, plants must also absorb carbon dioxide and light from above the ground.
The evolutionary solution to this separation of resources was the development of three basic organs: roots, stems, and leaves. They're organized into a root system and a shoot system. The root and shoot system is connected by vascular tissue. Vascular, or plant tissue transports nutrients and water throughout the plant. The xylem transports water, mostly. The phloem transports nutrients, mostly. Vascular tissue runs continuously throughout the plant. (http://www.biology-online.org/dictionary/Vascular_tissue)
The root system is made up of the subterranean bulk of the plant. Roots are branching organs which grow downward into the soil. Branching occurs irregularly and not from nodes as in stems.
The shoot system is composed of stems and leaves. With few exceptions, angiosperms (magnoliophyta, flowering plants), and other vascular plants rely completely on both systems for survival.
(https://www.britannica.com/plant/angiosperm)
Bluebonnets are examples of angiosperms. Roots of plants are typically non photosynthetic and would starve without the organic nutrients imported from the shoot system. The shoot system depends on the water and minerals that roots absorb from the soil.
There are two different kinds of plant shoots. There are vegetative shoots and the reproductive shoots. In angiosperms, the reproductive shoots are flowers. Flowers are composed of leaves that are highly modified for sexual reproduction.
The scientific study of plants is called botany (https://www.botany.org/bsa/careers/what_is_botany.php).
The structure of a plant is very interesting. The season is changing and plants are seemingly decorating for the holidays.
