Compare the distribution and arrangement of vascular bundles in the stem sections of dicotyledon and monocot plants.

Dicotyledon plants typically have a ring of vascular bundles in their stems, with the xylem located towards the center and the phloem towards the outside. This arrangement allows for efficient transport of water and nutrients throughout the plant. In contrast, monocotyledon plants have scattered vascular bundles throughout their stems, with no distinct pattern or arrangement. This distribution allows for flexibility and support in the stem, but may not be as efficient for transport as the ring arrangement found in dicotyledon plants. Overall, the distribution and arrangement of vascular bundles in dicotyledon and monocotyledon plants reflect their evolutionary adaptations to different environments and growth habits.

Dicotyledons

- Vascular bundles are arranged in a ring
- Each bundle consists of xylem and phloem
- Cambium is present between the xylem and phloem
- The arrangement of vascular bundles allows for secondary growth

Monocotyledons

- Vascular bundles are scattered throughout the stem
- Each bundle consists of xylem and phloem
- Cambium is absent
- The arrangement of vascular bundles does not allow for secondary growth

Summary

The main difference between the distribution and arrangement of vascular bundles in dicotyledon and monocotyledon plants is that in dicotyledons, the vascular bundles are arranged in a ring, while in monocotyledons, the vascular bundles are scattered throughout the stem. This difference is due to the presence of cambium in dicotyledons, which allows for secondary growth.