2.5 Transport Systems in Plants

Question 1

Name the plant organs.

Answer 1

Roots, stems, leaves.

Question 2

What do plants need water for?

Answer 2

Transporting materials and photosynthesis.

Question 3

Label a leaf cell from top to bottom.
_______ epidermis
_______ mesophyll
_______ mesophyll
_____
_______ epidermis
_______ cells
_______

Answer 3

Upper epidermis
Palisade mesophyll
Spongy mesophyll
Vein (consisting of xylem and phloem)
Lower epidermis
Guard Cells
Stomata

Question 4

What do root hair cells absorb?

Answer 4

Water and minerals from the soil.

Question 5

What are xylem cells?

Answer 5

Dead and contain lignin for support.

Question 6

What do xylem vessels transport?

Answer 6

Water and minerals up the stem.

Question 7

What is the evaporation of water through leaves called?

Answer 7

Transpiration

Question 8

What is the phloem made of?

Answer 8

Living cells: sieve tubes and companion cells.

Question 9

What do phloem vessels transport?

Answer 9

Sugar up and down the cell.

Question 10

What is used to measure the rate of transpiration?

Answer 10

A potometer.

Question 11

What affects the rate of transpiration? (4)

Answer 11

Wind speed, humidity, temperature and surface area.