Angiosperms are the group of plants that have vessels as their characteristic feature. Vessels, also known as xylem vessels, are specialized long cells that form a network of tubes within the plant. These vessels play a crucial role in transporting water and nutrients throughout the plant.

Here is a detailed explanation of why angiosperms have vessels as their characteristic feature:

1. Angiosperms:
Angiosperms are flowering plants that produce seeds enclosed within a fruit. They are the most diverse group of plants, with over 300,000 known species. Angiosperms can be found in various habitats, ranging from deserts to rainforests.

2. Xylem and Phloem:
Angiosperms possess complex vascular tissues called xylem and phloem. Xylem is responsible for the transport of water and minerals from the roots to the rest of the plant, while phloem transports sugars and other organic compounds from the leaves to other parts of the plant.

3. Xylem Vessels:
The xylem tissue in angiosperms contains vessels, which are tubular structures formed by the stacking of dead cells called vessel elements. These vessel elements have perforations at their ends, allowing for efficient water transport.

4. Structure of Vessels:
Vessels are composed of elongated cells that are aligned end to end, forming a continuous tube. The walls of these cells are thickened with a substance called lignin, which provides strength and support to the vessels. The presence of lignin also makes vessels impermeable to water, ensuring efficient water transport.

5. Water Transport:
The vessels in angiosperms facilitate the upward movement of water from the roots to the leaves. This process is known as transpiration. As water is lost from the leaves through small openings called stomata, a negative pressure is created, which pulls water up through the vessels. This process is driven by the cohesive and adhesive properties of water.

6. Efficiency and Adaptation:
The presence of vessels in angiosperms allows for efficient water transport over long distances, enabling them to thrive in diverse environments. This adaptation has contributed to the success and dominance of angiosperms in various ecosystems.

In conclusion, angiosperms have vessels as their characteristic feature. These vessels play a crucial role in the efficient transport of water and nutrients throughout the plant, enabling angiosperms to thrive in a wide range of habitats.

The presence o f vessels is a characteristic feature of angiosperms. Vessels help in conduction of water and dissolved salts form roots to the diffe