What is modified underground stem?
Underground stems are modified plants that derive from stem tissue but exist under the soil surface. They function as storage tissues for food and nutrients, propagation of new clones, and perennation (survival from one growing season to the next).
What are examples of modified stems?
Stem Modifications
- Tendrils are slender, twining strands that enable a plant (like the buckwheat vine) to seek support by climbing on other surfaces.
- Thorns are modified branches appearing as hard, woody, sharp outgrowths that protect the plant; common examples include roses, osage orange, and devil’s walking stick.
Which plants have underground stem modification?
Many plants have underground modified stems that may be mistaken for roots. Examples of underground stems include corms, such as taro (left); rhizomes, such as ginger (center); and tubers, such as potatoes (right).
Why do stems get modified?
Stem modification – definition In some plants the stems are modified to perform the function of storage of food, support, protection and vegetative propagation. 1. For food storage: Rhizome (ginger), Tuber (potato), Bulb (onion), Corm (Colocasia).
Is turmeric a Nodulose root?
Rhizome is the underground stem of of turmeric plant which is yellowish in colour and is used in making spices. …
Why Ginger is a stem not a root?
The stems of ginger are underground stems. These are modified plants and are derived from the stem tissues. The stem exists below the ground level and so it is referred to as the rhizome or rhizome roots. The rhizomes of ginger are considered as stems and not as roots as it contains nodes and internodes.
Is Ginger a modified stem?
Complete Answer: – Rhizome of ginger is a modification of stem in vascular plants because it bears internodes and nodes. – Rhizome is found under the ground and they send roots and shoots with the help of nodes outside the ground.
Is potato an underground stem?
The tubers originate from the swollen ends of stolons. The stored food in tubers is used to grow stems. Therefore, the potato is an underground stem because it possesses axillary buds called eyes.
Why potato is a stem for kids?
The potato is actually a stem. A stem in disguise, that grows under the ground! Thus, the potato plant has changed the shape and size of its stem to store food and water. And this storage is done under the ground where it is relatively cooler.