KA2.5 - Plant Transport Systems

Question 1

What are the three main organs found in plants?

Answer 1

Roots, stems and leaves

Question 2

List the structures found in the leaf structure (try picture it in your head)

Answer 2

1. Upper epidermis
2. palisade mesophyll
3. spongy mesophyll
4. vein (consisting of xylem and phloem)
5. lower epidermis
6. guard cells and stomata

Question 3

Water and minerals enter the plant through … and are transported in dead … vessels.

Answer 3

Root hair cells … xylem vessels.

Water and minerals enter the plant through root hair cells and are transported in dead xylem vessels.

Question 4

Xylem found in plants are hollow tubes held open by rings of …

Answer 4

Lignin.

Similar to the cartilage in your throat these hold the xylem tubes open.

Question 5

State the structure that transports sugar throughout the plant?

Answer 5

Phloem.

Question 6

A plant phloem consists of a phloem tube and … cells.

Answer 6

Companion cells.

Question 7

In the plant water is needed for transporting materials and …

Answer 7

Photosynthesis.

Question 8

Transpiration in plants is the movement of …

Answer 8

Water.

Transpiration is the process by which water moves from the soil to the leaves.

Question 9

Describe the process of transpiration through the plant?

Answer 9

Root hair cells -> Xylem -> mesophyll cells -> diffuses out the stomata

Question 10

State the factors which impact transpiration?

Answer 10

Wind speed, humidity, temperature and surface area

Question 11

A … wind speed, temperature and surface area will all increase the rate of transpiration?

Answer 11

High.

They all speed up the loss of water from the plant.