Write short notes on the vascular bundles of the dicot stem.
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Vascular Bundle of Monocot Stem and Dicot Stem: Difference
Difference # Vascular Bundle of Monocot Stem:
1. The vascular bundles are scattered in the ground tissue.
2. They are of different sizes, the smaller being restricted to peripheral sides.
3. They appear to be embedded in ground tissue.
4. Each vascular bundle is encircled by bundle sheath made up of sclerenchyma.
5. There is no bundle cap.
Difference # Vascular Bundle of Dicot Stem:
1. The vascular bundles are arranged more or less in a ring surrounding central pith.
2. They are more or less uniform in size.
3. On the sides of vascular bundles medullary parenchyma occurs.
4. Bundle sheath is lacking.
5. In some plants sclerenchymatous bundle cap is present.
6. Each vascular bundle is conjoint, collateral or bicollateral and open, i.e. there exists the cambium in between xylem and phloem.
7. The proto- and metaxylem are arranged in rows.
8. Phloem is situated on the peripheral side of xylem.
9. There is no protoxylem lacuna.
10. Secondary vascular tissues are formed by fascicular cambium.
Difference # Vascular Bundle of Monocot Stem:
1. The vascular bundles are scattered in the ground tissue.
2. They are of different sizes, the smaller being restricted to peripheral sides.
3. They appear to be embedded in ground tissue.
4. Each vascular bundle is encircled by bundle sheath made up of sclerenchyma.
5. There is no bundle cap.
Difference # Vascular Bundle of Dicot Stem:
1. The vascular bundles are arranged more or less in a ring surrounding central pith.
2. They are more or less uniform in size.
3. On the sides of vascular bundles medullary parenchyma occurs.
4. Bundle sheath is lacking.
5. In some plants sclerenchymatous bundle cap is present.
6. Each vascular bundle is conjoint, collateral or bicollateral and open, i.e. there exists the cambium in between xylem and phloem.
7. The proto- and metaxylem are arranged in rows.
8. Phloem is situated on the peripheral side of xylem.
9. There is no protoxylem lacuna.
10. Secondary vascular tissues are formed by fascicular cambium.
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Explanation:
vIn the dicot stem, the vascular bundles are arranged in a ring, with pith concentrated at the core of the stem, rather than being scattered throughout the plant interior. In each vascular bundle, the xylem and phloem are separated by a substance called vascular cambium.
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