Ch. 8 Transport in plants ✅

Question 1

What absorbs water/mineral ions and transports it to the leaves?

Answer 1

Xylem

Question 2

What transports sucrose and amino acids from leaves?

Answer 2

Phloem

Question 3

What is xylem?

Answer 3

Plant tissue made up of dead empty cells joined end to end

Question 4

What is phloem?

Answer 4

Plant tissue made up of living cells

Question 5

Where do xylem vessels run from?

Answer 5

From roots through steams to leaves

Question 6

What are xylem vessels made of?

Answer 6

Ligning and cellulose

Question 7

What is the purpose of ligning?

Answer 7

To support the plant

Question 8

What is a vascular bundle?

Answer 8

A group of xylem and phloem tubes

Question 9

Where is vascular bundle located in root?

Answer 9

At the centre

Question 10

Where is vascular bundle located in steam?

Answer 10

Arranged in ring near outside edge

Question 11

How are root hair?

Answer 11

Protective cap at the end, rest of root covered in cells called epidermis

Question 12

What are epidermis?

Answer 12

Cells covering root hairs

Question 13

What is the function of root hairs?

Answer 13

To absorb water and mineral ions

Question 14

How does water move into root hair?

Answer 14

By osmosis

Question 15

What happens after water moves into root hair?

Answer 15

Diffuses down concentration gradient

Question 16

How does water move up xylem?

Answer 16

Higher and lower pressure, transpiration steam

Question 17

What’s transpiration?

Answer 17

Loss of water vapour from a plant

Question 18

Where does most of transpiration occur?

Answer 18

In the leaves

Question 19

How happens transpiration?

Answer 19

Water leaves through stomata, moisture covering mesophyll cells leaves

Question 20

What’s the transpiration pull?

Answer 20

A force produced by the loss of water vapour from a leaf, which reduces the pressure at the top of xylem vessels

Question 21

What’s the rate of transpiration?

Answer 21

The rate at which a plant takes up water

Question 22

How is transpiration rate measured?

Answer 22

By using photometer and recording how fast water meniscus goes up

Question 23

What conditions affect transpiration rate?

Answer 23

1. Temperature (higher temperature means higher transpiration rate)
2. Wind (more wind = more transpiration rate)
3. Humidity (more humidity = less transpiration rate)

Question 24

What is the translocation?

Answer 24

The movement of sucrose and amino acids on phloem from sources to sinks

Question 25

Where is sucrose produced?

Answer 25

In the leaves

Question 26

What happens to sucrose?

Answer 26

Transformed in starch and stored as energy source by roots