The below mentioned article provides study notes on Secondary Growth in Dicot Stem of plants. Primary growth produces growth in length and development of lateral appendages. Secondary growth is the formation of secondary tissues from lateral meristems. It increases the diameter of the stem. In woody plants, secondary tissues constitute the bulk of the plant. They take part in providing [...]
The following points highlight the four main types of underground modified stems. The types are: 1. Rhizome 2. Tuber 3. Corm 4. Bulb. Type # 1. Rhizome: It is a fleshy modified stem which grows horizontally beneath the surface of the soil. It has distinct nodes and internodes and minute scale leaves at the nodes. Lateral buds come out as [...]
The upcoming discussion will update you about the difference between dicot and monocot stem. Difference # Dicot Stem: 1. Ground tissue in dicotyledonous stem is well-differentiated into extra-stelar and intra-stelar regions. Extra-stelar ground tissue is differentiated into three zones:—collenchymatous hypodermis, parenchyma and starch sheath; and intra- stelar ground tissue consists of pericycle—homogeneous or heterogeneous, large medulla and medullary rays. 2. [...]