The following points highlight the six main types of modification of aerial stems. The types are: 1. Stem Tendrils 2. Hooks 3. Stem Thorns 4. Phylloclade's 5. Cladodes 6. Thalamus. Type # 1. Stem Tendrils: Tendrils are thread-like sensitive structures which can coil around a support and help the plant in climbing. They may be branched or un-branched. Branched stem [...]
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. [...]
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 [...]