Lesson 4.2.3.2
4.2.3.2 Plant organ system Quiz: AQA Combined Science, Unit 2
20 questions
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Lesson 4.2.3.2, Plant organ system: 20 multiple choice questions for the AQA GCSE Combined Science (8464), Unit 2: Organisation, written with Revision Ninja.
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The 20 questions
-
What is the main loss of water vapour from plant leaves called?
- Photosynthesis
- Translocation
- Transpiration
- Respiration
-
What is the name of the process transporting sugars through plant phloem?
- Translocation
- Transpiration
- Osmosis
- Diffusion
-
By which process do root hair cells absorb water from the soil?
- Osmosis
- Transpiration
- Diffusion
- Active transport
-
By which process do root hair cells absorb mineral ions from the soil?
- Active transport
- Transpiration
- Diffusion
- Osmosis
-
Which plant structures control gas exchange and water loss?
- Xylem vessels
- Phloem tubes
- Stomata
- Root hairs
-
Which change decreases the rate of transpiration?
- Increasing humidity
- Increasing temperature
- Increasing light intensity
- Increasing air movement
-
Which chemical substance strengthens the cell walls of xylem tissue?
- Starch
- Cellulose
- Lignin
- Glycogen
-
What does phloem tissue carry?
- Carbon dioxide gas
- Mineral ions only
- Oxygen gas
- Dissolved sugars
-
What effect does increased wind speed have on the rate of transpiration?
- Increases
- Decreases
- Stops completely
- Has no effect
-
What effect does higher light intensity have on the rate of transpiration?
- Increases
- Stops completely
- Has no effect
- Decreases
-
A plant takes up 12 cm³ of water in 4 hours. What is the rate of water uptake?
- 8 cm³ per hour
- 3 cm³ per hour
- 48 cm³ per hour
- 0.33 cm³ per hour
-
A leaf of area 20 cm² loses 40 cm³ of water in 2 hours. What is the rate per cm² per hour?
- 2 cm³
- 40 cm³
- 1 cm³
- 20 cm³
-
Which feature increases the surface area of a root hair cell for absorption?
- Stomatal pore
- Waxy cuticle
- Long projection
- Sieve plate
-
What is the primary function of xylem tissue in plants?
- Produce glucose
- Transport water
- Store starch
- Transport sugars
-
Which process drives water upwards through the xylem?
- Translocation
- Photosynthesis
- Active transport
- Transpiration
-
Which plant adaptation helps to reduce water loss in dry conditions?
- Fewer stomata
- Thin cuticle
- More root hairs
- Larger leaves
-
What does a positive correlation between temperature and transpiration rate show?
- Rate stays constant
- Rate increases
- Rate stops entirely
- Rate decreases
-
Which tissue transports dissolved sugars up and down a plant?
- Xylem
- Phloem
- Palisade mesophyll
- Epidermis
-
What effect does high atmospheric humidity have on the rate of transpiration?
- Has no effect
- Decreases
- Increases
- Doubles
-
Which graph type is best to show change in transpiration rate over time?
- Bar chart
- Line graph
- Pie chart
- Scatter graph
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