Xylem

Question 1

What is xylem made up of?

Answer 1

Tracheids and vessels

Question 2

What type of tissue is xylem?

Answer 2

Dead vascular tissue

Question 3

What are tracheids?

Answer 3

Long, sloping or tapering cells whose insides are hollow at maturity which overlap

Question 4

What is the function of pits in tracheids?

Answer 4

They allow water to pass from tracheid to tracheid through thin parts of the walls of them (Pits)

Question 5

What are vessels?

Answer 5

Tubular structures formed when a number of cells join end-to-end. They are wider than tracheids and their end walls break down to form continuous tubes.

Question 6

What is the function of pits in vessels?

Answer 6

To allow water to pass from one vessel to another (More efficient at water transport than tracheids)

Question 7

What is lignin?

Answer 7

A strengthening material found in some plant cell walls

Question 8

What are the functions of xylem?

Answer 8

Transport of water and mineral salts from the root to the leaves and gives mechanical support to the plant due to lignin

Question 9

Where can xylem be found?

Answer 9

Found in vascular bundles in roots, stems, leaves and flowers

Question 10

TS+LS of tracheids (Draw)

Answer 10

See notes

Question 11

TS+LS of vessels (Draw)

Answer 11

See notes