This video tutorial explores the transport systems in plants, focusing on the roles of xylem and phloem. Xylem transports water and minerals from roots to leaves, while phloem moves glucose and amino acids throughout the plant. The arrangement of vascular bundles varies in different plant parts, providing structural support. Xylem vessels are made of dead cells with lignin, making them strong, while phloem vessels consist of living cells, allowing bidirectional transport of nutrients.

What is the primary function of the xylem in plants?

• Transporting glucose and amino acids

• Producing photosynthesis

• Moving water and solutes from roots to leaves

• Circulating blood

Which material is found in the walls of xylem vessels that makes them resistant?

• Cellulose

• Lignin

• Chitin

• Keratin

Where are the vascular bundles located in the roots, and why?

• Near the surface, for easy access to nutrients

• At the edge, for flexibility

• Scattered throughout, for even distribution

• In the center, for protection and support

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

• Both xylem and phloem move substances only upwards

• Both xylem and phloem move substances only downwards

• Xylem moves substances upwards, phloem in both directions

• Xylem moves substances in both directions, phloem only upwards

What type of cells make up the phloem vessels?

• Dead cells

• Bone cells

• Living cells

• Muscle cells