In this article we will discuss about the secondary growth in certain dicotyledonous stem:- 1. Aristolochia 2. Cucurbita. Dicotyledonous Stem # 1. Aristolochia: Aristolochia is a liane (woody climber) and its secondary growth in stem differs from the normal woody plants. The most striking differences are the formation of only parenchymatous medullary rays by the interfascicular cambium, and vascular tissues [...]
The following points highlight the eight main parts of primary dicot stem in plants. The parts are: 1. Epidermis 2. Hypodermis 3. General Cortex 4. Endodermis 5. Pericycle 6. Vascular Strand 7. Medullary or Pith Rays 8. Pith or Medulla. Dicot Stem: Part # 1. Epidermis: Epidermis is the outermost layer of the stem. It is made up of compactly [...]
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 [...]