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Underground stems have nodes, internodes, scale leaves, buds, and other characteristics similar to aerial stems. Its various forms include rhizomes, tubers, and corms. Roots are branched structures with no nodes or nodes between them.
The stem helps in providing structure and support to the plant. It is modified into three important types: Underground Modification of Stem. Sub-aerial Modification of Stem. Aerial Modification of Stem.
Underground stems are modified plant parts that derive from stem tissue but exist under the soil surface. They function as storage tissues for food and nutrients, facilitate the propagation of new clones, and aid in perennation (survival from one growing season to the next). [2]
Underground stem, Aerial stem, and subaerial stem are three different types of Stem. A stem has many important functions it performs other than letting you climb a tree. Let us take an in-depth look at the stem of plants.
Underground Stem Modifications. As the name suggests, these are present underground. They serve various purposes such as storage of food, propagation and perennation. They can be identified from roots by the presence of nodes and internodes. They help in propagation through asexual reproduction and help the plant survive a period of dormancy.
Jun 19, 2024 · Based on the kind of growth (transverse or oblique or vertical) and specific part which stores food, underground stems can be classified as Bulb, Stem tuber, rhizome and Corn. Classification of underground stems (a) Bulb – It is a specialized underground stem in which the lower base bears root and the upper part bears a fleshy rosette of leaves.
Underground stems differ from roots, in the presence of nodes and internodes, scale leaves, axillary and terminal buds, and branches. Ex. Potato. There are four types of modified underground stem. Rhizome, Tubers, Bulbil and Corm. Let’s first discuss Rhizome. Rhizomes have horizontal, thick stems that store food.
The underground part of the flowering plant is the root system while the portion above the ground forms the shoot system (Figure 5.1).
Oct 31, 2023 · rhizome: a horizontal underground stem of some plants that sends out roots and shoots from its nodes; corm: a short, vertical, swollen underground stem of a plant that serves as a storage organ to enable the plant to survive winter or other adverse conditions such as drought
May 2, 2024 · rhizome, horizontal underground plant stem capable of producing the shoot and root systems of a new plant. Rhizomes are used to store starches and proteins and enable plants to perennate (survive an annual unfavourable season) underground.
