Table of Contents
- 1 What are the modifications of stem class 6?
- 2 What are the 5 types of modified stems?
- 3 What are the modifications of stem class 11?
- 4 What are the four types of modified stems?
- 5 What are 2 examples of modified leaves?
- 6 What is root stem modification?
- 7 Is Onion a modified stem?
- 8 Which is an example of modified stem?
- 9 What are examples of modified stems?
- 10 What is modified stems?
What are the modifications of stem class 6?
For protection Stems may be modified as thorns, like in bougainvillea or may be in the form of hard and sharp prickles, as in rose (Fig. 8.5), to protect the plant from being eaten by animals. For support Stems of some climbers like grapes and passion flower are modified to form special structures called tendrils (Fig.
What are the 5 types of modified stems?
Modified stems can be categorized into three types: Underground – Rhizome, Bulb, Corm, Tuber. Subaerial – Runner, Sucker, Offsets, Stolon. Aerial – Tendrils, Thorn, Bulbils, Cladode, Phylloclade.
What are the modifications of stem class 11?
These modified stems are called phylloclades. Usually the phylloclades retain water in the form of mucilage. e.g., Opuntia, Casuarina, Cocoloba and Ruscus. In Opuntia, the leaves are modified into spines and the stems becomes fleshy leaf like phylloclade.
What is root modification?
Root modifications are the permanent change in the structure which are caused so that the plant can be able to withstand and adjust to the environment. So, the correct answer is ‘Permanent structural changes in roots’.
Is Sugarcane a modified stem?
– Vegetative propagation of the modified stems of potato, ginger and sugarcane is by vegetative bud. Vegetative buds are normally present on the stems and branches of plants. Vegetative buds are also present on the modified underground stems of plants like potato etc.
What are the four types of modified stems?
Terms in this set (5)
- Rhizomes. A horizontal shoot that grows just below the surface.
- Bulbs. Vertical underground shoots consisting mostly of enlarged bases of leaves that store food.(eg:onion)
- Stolons. Horizontal shoots that grow along the surface.
- Tubers.
- Relationship.
What are 2 examples of modified leaves?
| Modification | Definition | Example |
|---|---|---|
| 1) Tendrils | The leaves are modified into slender wiry and coiled structures called leaf tendrils and support climbers to climb | Pisum Sativum |
| 2) Spines | The leaves modified into a pointed structure and usually protect them from herbivores. | Opuntia |
What is root stem modification?
Plant has different parts like root, stem and leaves. Each of them has a separate function to perform. However in special cases, roots may get modified to store food, help in respiration and provide support. Depending on the need and type of plant, the adventitious or tap roots may be modified.
What are the types of root modifications?
Modifications of Roots for Physiological and Mechanical Functions
- Storage Roots: Storage roots become fleshy by the accumulation of stored up food.
- Epiphytic or Aerial Absorbing Roots:
- Assimilatory Roots:
- Reproductive Roots:
- Respiratory Roots or Pneumatophores:
- Sucking Roots or Haustoria:
- Mycorrhizal Roots:
Is maize a modified stem?
These are modified based on the requirement of the plant into prop roots, stilt roots, nodulose roots, climbing roots, etc. Maize and sugarcane show the presence of stilt roots. The lower nodes of maize and sugarcane stem elongate to form adventitious root fibers that are called stilt roots.
Is Onion a modified stem?
The onion bulb is a modified stem because it consists of large numbers of fleshy scales leaves. At the base of the onion the root appears as a thread like structure.
Which is an example of modified stem?
A rhizome is a modified stem that grows horizontally underground; it has nodes and internodes. Runners are a type of stolon that runs above the ground and produces new clone plants at nodes at varying intervals: strawberries are an example. Tubers are modified stems that may store starch, as seen in the potato.
What are examples of modified stems?
Stems of plants come in a variety of shapes and sizes, and are adapted for various functions. One example of a modified stem is a horizontal stem called a stolon, such as the one found a strawberry plant. A stolon, which grows along the surface of the ground, enables a plant to reproduce asexually, as plantlets form nodes along their length.
What are the two types of stem modification?
Underground Stem Modifications As the name suggests,these are present underground. They serve various purposes such as storage of food,propagation and perennation.
What are modifications of a STEM provides storage?
Modifications of Stem Modification of Stems for the Storage of Food: Underground stems of potato, ginger, turmeric, zaminkand, colocasia are modified to store food in them. Modifications for support: Stem tendrils which develop from axillary buds, are slender and spirally coiled and help plants to climb such as in gourds (cucumber, pumpkins, watermelon) and grapevines. Stem modifications for defence: Axillary buds of stems may also get modified into woody, straight and pointed thorns. Thorns are found in many plants such as Citrus, Bougainvillea.
What is modified stems?
Modified stems. A modified stem is an organ that stores food, which the plant can then use to survive its dormancy period. Also, it is often the means by which a plant can spread and produce new plants. To be classed amongst this group a modified stem must exhibit all the characteristics of a stem.