# data[].attributes.body
9.1
Outline the process of measuring the rate of transpiration in plants.

Explain the adaptations of Xerophytes which reduce transpiration in dry conditions.

How does the structure of xylem cells aid its function in transporting water?

9.2
Describe the process of phloem transport with reference to turgor pressure.

Draw a labelled diagram of a phloem vessel, including the movement of ions in and out of the cells.

# data[].attributes.body
9.1 Explain how the properties of water assist in transpiration (4)

9.1 How are the characteristics of xerophytes beneficial to its growth? (6)

9.2 Describe the movement of sucrose from the source to the sink in the phloem (6)

9.2

# data[].attributes.body
9.1
1) Explain the adaptations of xylem vessels (4)
2) Describe mineral uptake in root hair cells.
3) Describe how you can measure the rate of transpiration (5)
9.2
1) Explain the function of companion cells (4)
2)

# data[].attributes.body
9.1
Explain the two properties of water that allow transpiration to occur [4]

Compare and contrast xylem and phloem [4]

Explain the stomata opening regulation in plants [8]

Distinguish between apoplastic and symplastic water uptake [2]

# data[].attributes.body
9.1:
q. describe function and structure correlated to the xylem

q. how does water transport water from roots to the leaves to replace water loss

q. how does the guard cell regulate transpiration

q. in what way does the cohesive and adhesive properties of water play a role in the transport of materials in plants

9.2
q. describe the transport of compounds from source to sink

q. describe the structure of the phloem sieve tubes in relation to its function

q. how is a proton gradient created in the phloem

q. how is a concentration gradient of sucrose established

# data[].attributes.body
9.1 Xylem transport

Outline adaptations of xerophyte (5)

Identify two types of interaction result from polar nature of water molecule that contribute to transpiration pull.(2)

Explain mineral uptake at root.(8)

Explain CAM physiology.(6)

Explain the trend in transpiration rate in accordance with wind speed.(6)

9.2 Phloem Transport
Describe the process of mass flow (4)

Explain the choice of using sucrose for transportation of carbohydrates in plant.(2)

# data[].attributes.body
9.1 Xylem Transport
-Explain how forces of attraction between similar and different substances aid in water transport. [4]

-Compare and contrast Xerophytes and Halophytes. [8]

-Explain the role of symport in water uptake and translocation. [4]

9.2 Phloem Transport
-Explain the transport of organic compounds in plants with reference to sources and sinks. [6]

# data[].attributes.body
9.1 Xylem Transport
Question: Explain the process of transpiration with reference to the properties of water within the xylem.
a - Transpiration is the uptake of water via the xylem
b - when stomata are open light energy converts water into vapour
c - this leads to a pressure gradient
d -  water is then absorbed by the roots which travels up the plant via the xylem
e - the adhesive properties of water allow it to stick to the xylem walls
f - the cohesive properties of water allow the molecules to move up the xylem by capillary action
[6]
9.2 phloem Transport
Question: Why do plants transport food in the form of sucrose rather than glucose?
a - sucrose is less reactive than glucose
b - it prevents cells from readily utilising the glucose for metabolism
c - it is water soluble
[3]
Question:

# data[].attributes.body
9.1: Transport in the xylem of plants.

1. How does the adhesive property of water and evaporation generate tension forces in leaf cell walls.

2. Name and explain 2 adaptations by xerophytes to combat arid conditions.

3. From start to the end, where are the parts water and mineral ions travel to first before reaching the xylem.

9.2

1. Name 3 characteristic of the sieve element

2. Explain in detail how symport takes place.

3. Differences between symplastic and apoplastic

# data[].attributes.body
9.1
- Identify the structure of primary xylem vessels in section of stems

-  Compare and contrast the role of the xylem/phloem in plants (8)

- Outline the transport of water model (4)

- Explain the adaptations of plants in deserts and in saline soils for water conservation (8)

- Outline how abiotic factors affect the rate of transpiration in plants (4)

- Describe how water is carried through the transpiration stem (8)

9.2
- Outline active transport in plants (4)

# data[].attributes.body
9.1
1. How does water transport from the roots to the leaves to replace losses from transpiration? [5]

2. Describe the two pathways that the water can transport from the root to the xylem. [4]

3. Describe the process of the opening and closing of guard cells. [4]

4. Explain transpiration pull.

9.2
1. Explain the properties of phloem and how does it contribute to its respective function. [8]

2. Explain how the hypertonic properties of sap solution in sieve elements contributes to mass flow. [6]

# data[].attributes.body
9.1
Describe gas exchange in the leaves of plants [6m]

Describe the movement of water from the soil to the xylem [4m]

Outline how a concentration gradient is generated in the uptake of ions from the soil [6m]

9.2
Suggest how the structure of sieve elements aid in its function [3m]

Outline the importance of concentration gradients in the movement of sucrose in the phloem [5m]

# data[].attributes.body
9.1
1.Outline 3 types of root uptake(3)
2.Explain how xylem structure adapts its function.(4)
3.Explain how properties of water molecules achieve transpiration (4)
4.Explain how guard cells regulate water conservation.(6)

9.2
1.Compare and contrast differents between xylem and phloem.(4)
2.Explain how phloem structure adapts its function.(4)
3.Explain the process of mass flow.(6)
4.Explain how ATP are used during active translocation.(4)

# data[].attributes.body
9.1
1) Explain the process of transpiration in plants. (8)
2) Explain the role of guard cells in controlling transpiration. (4)
3) How does the structure of xylem vessels allow transport under tension. (3)
4) Explain how the properties of water and how it helps in the transpiration in plants (4)
5) Outline the use of potometer. (3)

9.2
1) What are the characteristics of companion cell? (3)
2)