morphological difference between roots and stems
Answers
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Roots:-
1. Stem arises from the plumule of embryo.
2. Stems are generally green, at least in the young state.
3. Stem is differentiated into nodes and internodes.
4. Stem bears leaves and buds on its nodes.
5. A root cap or any other equivalent structure is absent.
6. The growing point of the stem is protected by young leaves.
7. The tip of stem possesses terminal bud.
Stems:-
1. Epidermis is protective in function.
2. Stem hairs usually do not arise as outgrowths of epidermal cells.
3. Stomata are found on the stem.
4. A colienchymatous or sclerenchymatous hypodermis is found below the epidermis.
5. Endodermis is not conspicuous.
6. Pericycle does not take part in secondary growth.
7. Vascular bundles are conjoint and collateral.
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In herbaceous stems, the vascular tissues are contained in bundles; these bundles sit relatively near the surface of the stem. In roots, the vascular tissues form a central core-a location where they are protected from the harsh activity of pushing through the soil. (We are referring to young, non-woody tissues.
In stems, side branches arise from axillary buds. These buds are located at the nodes in the leaf axil (the point where the leaf attaches to the stem). Lateral roots, on the other hand, arise from deep within the root's tissue, near the central core. Roots don't have nodes or buds.