nodes

Lymph nodes are oval or bean shaped bodies placed in the lymphatic vessels. They act as filters and are sites where lymphocytes are formed. The main groups of lymph nodes lie in the neck, axilla, thorax, abdomen and groin. They help in the production of antibodies and in the dev..

Consider the positions where Then y = 0 R = 0 Since the resultant amplitude is zero, these positions correspond to nodes. ..

When the stipules form a hollow tube encircling the stem from the node up to a certain height of the internode, it is said to be ochreate. (e.g., Polygonu..

Control of the Heart Function - The control of the heart function is by a set of muscles and is, therefore, called myogenic . If the heart is removed from a living mammal and placed in a well oxygenated salt solution maintained at 37 o C, the heart continues to function though at a slower rate. Pos..

In this type, the leaves are arranged in pairs at each node. When the opposite leaves arise in the same plane at successive nodes, it is said to be opposite superposed phyllotaxy. e.g., Quisqualis. When each opposite pair of leaves are at right angles to each other, phyllotaxy i..

Stem has nodes and internodes. The nodes develop leaves. In the axils of the leaves buds develop called the axillary buds. They develop into new plants on detachment from the parent plant or even when the stem portion remains attached. There are different types of stems for veg..

In this type, a single leaf arises at each node. The consecutive leaves are produced in a spiral manner around the stem. e.g. Polyalthia, Hibiscus, e..

Leaf - The leaf is a green, flattened structure borne on the stem at the nodes and is a lateral appendage of the stem. A typical leaf is also known as the foliage leaf in order to distinguish it from other forms of leav..

The plants that sexually reproduce have the reproductive structures called the flowers. The flower is a condensed shoot with the nodes present very close to each other. The different parts of the plant are attached to the nodes. All the structures present at one nodeh..

The plants that sexually reproduce have the reproductive structures called the flowers . The flower is a condensed shoot with the nodes present very close to each other. The different parts of the plant are attached to the nodes. All the structures present at one node..