2.5 Transport Systems In Plants

Question 1

Describe the movement of water in the leaves of a tree?

Answer 1

Into air space and out of stomata

Question 2

Describe the movement of water in the stem of a tree?

Answer 2

Moves up stem through the xylem

Question 3

Describe the movement of water in the roots of a tree?

Answer 3

Moves into roots from soil by osmosis, then to the stem

Question 4

What is a substance that is transported in the phloem?

Answer 4

Glucose/sugar

Question 5

What substance is transported in the xylem?

Answer 5

Water

Question 6

What is the structure of xylem?

Answer 6

It has rings of lignin

Question 7

What is the structure of phloem?

Answer 7

It has a sieve and companion cells

Question 8

What is the structure, found in the leaf, which water vapour and oxygen can exit?

Answer 8

Stomata

Question 9

What is the stomata’s role in the plant?

Answer 9

• used to bring carbon dioxide into the plant, and remove water (vapour) and oxygen

Question 10

What is the xylem direction of transport?

Answer 10

Moves up the plant only

Question 11

Is phloem living or dead?

Answer 11

Living

Question 12

Is xylem living or dead?

Answer 12

Dead

Question 13

What is the phloem direction of transport?

Answer 13

Moves up and down the plant

Question 14

How can the stomata of a plant open and close?

Answer 14

Due to the guard cells

Question 15

What are three factors that affect transpiration rates in plants?

Answer 15

• humidity (rate increases with decrease)
• temperature (rate increases with increase)
• Windspeed (rate increases with increase)

Question 16

What equipment is used to measure transpiration rate?

Answer 16

Potometer