define nodes and Internodes
define axillary buds and terminal buds
which type of propogation is seen in potato,and ,colacasisa
Answers
The main difference between node and internode is that the node is the point of attachment of leaves to the stem whereas the internode is the distance between two consecutive nodes.
Node and internode are two structural parts found in the stem. The stem is one of the two structural parts of a vascular plant. Nodes bear axillary buds, which can either develop into branches, flowers or cones while an internode is responsible for the elongation of the stem.
Key Areas Covered
1. What is a Node
– Definition, Features, Importance
2. What is an Internode
– Definition, Features, Importance
3. What are the Similarities Between Node and Internode
– Outline of Common Features
4. What is the Difference Between Node and Internode
– Comparison of Key Differences
Key Terms
Axillary Bud, Budding, Internode, Node, Stem Cutting, Transportation
Difference Between Node and Internode - Comparison Summary
What is a Node
A node is the structural part of the stem of vascular plants, which forms a slight swelling in the stem. Nodes contain either scars or generative structures such as axillary buds, flower buds, or buds of cones. The axillary buds are responsible for the development of branches. Aerial roots also develop from some plant nodes. The identification of nodes is important for the vegetative propagation of plants. Most woody and herbaceous plants can be propagated through stem cutting. For successful rooting, a cut more than 6 inches in length should be taken from the mother plant. Also, pruning is a method used to maintain the size of the plant and when the stems are pruned above a node, the axillary bud of that node becomes induced and produce new stems. When budding, the node of one plant serves as the scion and it should be cut off with the cambium.
What is an Internode
Internode is the part of the stem that occurs between two consecutive nodes. The length of the internode provides a proper space between the two consecutive nodes. But, some plants such as dwarf conifers always have short internodes. Therefore, these plants can be pruned or sheared into different shapes.
What is the Difference Between Node and Internode
Furthermore, both xylem and phloem occur in the internode; therefore, the main function of internodes is transportation. The xylem is responsible for the transportation of water from the roots to the leaves while the phloem is responsible for the translocation of food from leaves to the storage parts. Other than that, the lengthening of the internodes increases the height of the plant.