Which component of the plant primarily facilitates water transport?

Which component of the plant primarily facilitates water transport?

• A. Phloem
• B. Xylem
• C. Parenchyma
• D. Collenchyma

Answer: (B)

The primary component of the plant that facilitates water transport is xylem. Xylem is specialized vascular tissue responsible for the conduction of water and dissolved minerals from the roots to the rest of the plant, particularly to the leaves where photosynthesis takes place. The xylem structure consists of tubular elements called vessels and tracheids that allow water to move upward through capillary action and cohesion. Xylem not only transports water but also provides structural support to the plant, helping it maintain its upright position. The driving force for water movement in xylem is primarily due to transpiration—the evaporation of water from the leaf surface—which generates negative pressure that pulls water upward from the roots. In contrast, phloem is responsible for transporting sugars and other metabolic products throughout the plant, while parenchyma and collenchyma tissues mainly serve roles in storage, healing, and providing support. Parenchyma cells can also aid in photosynthesis and storage functions, and collenchyma provides flexible support, particularly in younger plant structures. However, neither of these tissues has a role in water transport like xylem does.

The primary component of the plant that facilitates water transport is xylem. Xylem is specialized vascular tissue responsible for the conduction of water and dissolved minerals from the roots to the rest of the plant, particularly to the leaves where photosynthesis takes place. The xylem structure consists of tubular elements called vessels and tracheids that allow water to move upward through capillary action and cohesion.

Xylem not only transports water but also provides structural support to the plant, helping it maintain its upright position. The driving force for water movement in xylem is primarily due to transpiration—the evaporation of water from the leaf surface—which generates negative pressure that pulls water upward from the roots.

In contrast, phloem is responsible for transporting sugars and other metabolic products throughout the plant, while parenchyma and collenchyma tissues mainly serve roles in storage, healing, and providing support. Parenchyma cells can also aid in photosynthesis and storage functions, and collenchyma provides flexible support, particularly in younger plant structures. However, neither of these tissues has a role in water transport like xylem does.