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The upcoming discussion will update you about the difference between monocotyledonous root and monocotyledonous stem.
Difference # Monocotyledonous Root:
1. Internally it is differentiated into epiblema, cortex and stele.
2. Epiblema is uniseriate or multiseriate (e.g. velamen of orchid root), lacks cuticle and stoma, and provided with unicellular root hairs.
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3. Cortex is commonly parenchymatous, the peripheral layers of which may be sclerenchymatous (e.g. stilt root of Maize) or collenchymatous (e.g. Monstera).
4. The stele is radial stele and remains encircled by endodermis.
5. Pericycle is uniseriate and may undergo sclerification.
6. The vascular bundle is radial and xylem polyarch.
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7. Protoxylem is exarch.
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8. Xylem and phloem strands are alternate to each other.
9. The protoxylem and metaxylem are arranged in rows.
10. There is no protoxylem lacuna.
11. At the centre there occurs large and well-developed pith.
Difference # Monocotyledonous Stem:
1. Internally it is differentiated into epidermis and ground tissue where vascular bundles appear to be embedded.
2. Epidermis is uniseriate and provided with cuticle and stomata.
3. Ground tissue is parenchymatous, the peripheral layers of which, i.e. hypodermis may be composed of sclerenchyma or sclerified parenchyma.
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4. The stele is atactostele and there exists no endodermis.
5. Pericycle is lacking.
6. The vascular bundle is conjoint, collateral and closed, and leptocentric and many in number.
7. Protoxylem is endarch.
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8. Xylem and phloem occur together on the same radius.
9. The proto- and metaxylem are arranged in the form of capital ‘Y’.
10. Usually a protoxylem lacuna is formed.
11. Pith is lacking.
