Plant Vascular System Concepts

The video explores plant transport systems, focusing on xylem and phloem. Xylem moves water and minerals from roots to leaves, while phloem transports glucose and amino acids throughout the plant. Vascular bundles, containing xylem and phloem, vary in position within the plant to provide structural support. The video also discusses the one-way movement in xylem and the bidirectional flow in phloem, setting the stage for a deeper dive into xylem and transpiration in the next part.

What is the primary function of the xylem in plants?

• Transporting glucose and amino acids

• Transporting carbon dioxide

• Transporting water and solutes

• Transporting oxygen

Which part of the plant is responsible for moving glucose and amino acids?

• Roots

• Phloem

• Xylem

• Leaves

What material makes xylem vessels tough and impermeable to water?

• Lignin

• Cellulose

• Keratin

• Chitin

Why are vascular bundles located in the center of the roots?

• To enhance photosynthesis

• To prevent the plant from being pulled out of the ground

• To increase water absorption

• To store nutrients

What is the role of lignin in xylem vessels?

• To help in photosynthesis

• To make them tough and impermeable

• To make them flexible

• To store nutrients

What is the main difference in the movement of substances in xylem and phloem?

• Both move substances only up

• Both move substances only down

• Xylem moves substances up and down, phloem moves only up

• Xylem moves substances only up, phloem moves up and down

What type of cells make up the phloem vessels?

• Dead cells

• Living cells

• Stem cells

• Root cells

In which direction do phloem vessels transport sucrose and amino acids?

• Only upwards

• Only sideways

• Only downwards

• Both upwards and downwards