Plant organs come in a variety of shapes and sizes. The plant’s body is anchored to the earth by the root, which absorbs water and mineral salts. Aerial organs such as leaves, flowers, seeds, and fruits are supported by the stem, which also conveys water and mineral salts from the ground to the aerial organs, as well as complex organic molecules from the leaves to the rest of the plant body. Leaves are specialised organs that capture sunlight and convert it to organic molecules through photosynthesis. Water is also released by transpiration.Some plants have blooms or inflorescence during reproductive periods, which are classified as one organ by some writers and as many organs split into somatic and reproductive sections by others. Male and female gametes are called macrospores and microspores, respectively. Fertilisation, which occurs in flowers as well, results in the creation of an embryo that remains dormant until germination.
What is the meaning of the basic plant organs?
The thallus body is found in the most primitive plants, the shoot (unipolar) plant body is more sophisticated, and most terrestrial plants contain the bipolar plant body.
The shoot (unipolar) plant body is made up entirely of branching shoots with no roots. This is seen in all Bryophytes sporophytes, mosses (Bryopsida) gametophytes, and Psilotopsida whisk fern sporophytes. Finally, the modern bipolar plant body has both shoots and roots. Most bipolar plants have stems and leaves as shoots, however this isn’t a prerequisite because immature plant stems are generally green.Seeds may be encased in various tissues, producing the fruits as a whole. The germination of an embryo results in the growth of a new plant.
What are the four organs of a plant?
- Stems (axial aerial organs with continuous growth), leaves (flat lateral organs with restricted growth), roots (axial soil organ modified for absorption), and floral units.
- (FU), which are elements of the generative system (fructifications) such as a pine cone or any flower, are all examples of bipolar plant organs.
- Buds, fruits, seeds, and the hypocotyl and epicotyl of seedlings are non-organs for various reasons:fruit is the ripe flower, hypocotyl is a part of stem between the seedling’s first leaves (cotyledons) and root.
- Typically, the vegetative shoot system contains of Root, stem, leaf, and FU are four basic plant parts that can be grouped into root and shoot systems in bipolar plants; the latter is typically divided into generative (bearing FU) and vegetative (bearing FU) shot systems (without FU).
What are the functions of the basic plant organs?
- System of Roots – Taproot systems and fibrous root systems are the two forms of root systems found in plants. Both are depicted.
- The taproot is a single, thick primary root with smaller subsidiary roots sprouting out from the sides in taproot systems. sources and store a large amount of food, allowing it to withstand drought and other environmental extremes.
- Fibrous root systems have several little branching roots known as fibrous roots, but no main central root. The large number of threadlike roots improves the surface area available for water and mineral absorption, yet the roots are fibrous.
- Shoot systems are the organs that hold vascular plants upright so they may access the sunlight and air they require. Leaves, flowers, cones, and secondary stems can all be found on stems. There is a bud of meristem tissue at each node that can split and specialise to develop a specific structure.
Advantages of basic plant organs
- A single leaf can be thought of as a photosynthesis factory. To make a product, a factory uses specialised machines. It’s also linked to a transportation system that brings in raw materials and transports the end product out. A leaf resembles a factory in all of these ways.
- Plants that are evergreen have a distinct technique for dealing with seasonal dryness. They don’t waste time and resources generating new leaves every year. Rather, they preserve their leaves and remain green all year.
- On the negative, needle-like leaves restrict the amount of surface area available for solar collection.
Conclusion
Plant organs come in a variety of shapes and sizes. The plant’s body is anchored to the earth by the root, which absorbs water and mineral salts. Aerial organs such as leaves, flowers, seeds, and fruits are supported by the stem, which also conveys water and mineral salts from the ground to the aerial organs, as well as complex organic molecules from the leaves to the rest of the plant body. The thallus body is found in the most primitive plants, the shoot plant body is more sophisticated, and most terrestrial plants contain the bipolar plant body. Buds, fruits, seeds, and the hypocotyl and epicotyl of seedlings are non-organs for various reasons: fruit is the ripe flower, hypocotyl is a part of stem between the seedling’s first leaves and root.