Plant Vascular System Functions

This video tutorial covers the transport systems in plants, focusing on the xylem and its role in water movement. It explains the forces of cohesion and adhesion that facilitate water transport and the process of transpiration. The structure and adaptations of the xylem, including its hollow, dead cells and lignin support, are discussed. The video also explores the arrangement of vascular bundles and the distribution of tissues in plant stems and roots, highlighting the differences between monocots and dicots.

What is the primary function of the xylem in plants?

• Transporting sugars

• Transporting water

• Photosynthesis

• Providing structural support

Which force is responsible for water molecules sticking to the sides of the xylem?

• Gravity

• Cohesion

• Tension

• Adhesion

What structural feature of the xylem allows it to maintain a continuous water column?

• Living cells

• Presence of chlorophyll

• Dead hollow cells

• Thick cell walls

What is the role of lignin in the xylem?

• Facilitating photosynthesis

• Absorbing water

• Providing structural support

• Transporting nutrients

In a transverse section of a plant stem, where is the xylem located?

• In the cortex

• In the epidermis

• In the center of the vascular bundle

• Closer to the periphery

What is the primary function of the phloem in plants?

• Transporting water

• Transporting sugars

• Providing structural support

• Absorbing nutrients

What is the function of the epidermis in plant stems?

• Nutrient absorption

• Protection and waterproofing

• Photosynthesis

• Transporting water

What is the role of root hairs in plant roots?

• Providing structural support

• Facilitating photosynthesis

• Transporting sugars

• Increasing surface area for water absorption

How are the xylem and phloem arranged in a plant root?

• Phloem in the center, xylem towards the periphery

• Both in the epidermis

• Randomly distributed

• Xylem in the center, phloem towards the periphery

What is the main function of the cortex in plant stems?

• Absorbing nutrients

• Providing structural support

• Photosynthesis and supporting vascular bundles

• Transporting water