Transpiration & Translocation — GCSE Biology Revision
Revise Transpiration & Translocation for GCSE Biology. Step-by-step explanation, worked examples, common mistakes and exam-style practice aligned to AQA, Edexcel, OCR, WJEC, Eduqas, CCEA, Cambridge International (CIE), SQA, IB, AP.
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Go to Organisation in OrganismsWhat is Transpiration & Translocation?
Transpiration is the process of water movement through a plant and its evaporation from leaves, which creates a continuous transpiration stream pulling water up from the roots. Translocation is the movement of sugars (produced during photosynthesis) from the leaves to other parts of the plant where they are needed for growth or storage, occurring in the phloem.
Board notes: Covered by all major boards (AQA, Edexcel, OCR). Understanding the factors affecting transpiration is a key area, often investigated with a potometer in practical work.
Step-by-step explanationWorked example
On a hot, windy day, the rate of transpiration increases. Water evaporates more quickly from the surface of the leaves through the stomata. This increases the tension in the xylem, pulling the column of water up from the roots faster to replace the water that has been lost.
Mini lesson for Transpiration & Translocation
1. Understand the core idea
Transpiration is the process of water movement through a plant and its evaporation from leaves, which creates a continuous transpiration stream pulling water up from the roots. Translocation is the movement of sugars (produced during photosynthesis) from the leaves to other parts of the plant where they are needed f...
Can you explain Transpiration & Translocation without copying the notes?
2. Turn it into marks
On a hot, windy day, the rate of transpiration increases. Water evaporates more quickly from the surface of the leaves through the stomata.
Underline the method, evidence, or command-word move that would earn credit in GCSE Organisation.
3. Fix the likely mark leak
Watch for this mistake: Confusing transpiration with translocation. Transpiration is the movement of water (in the xylem), while translocation is the movement of food/sugars (in the phloem).
Write one correction rule before doing another practice question.
Practise this topic
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Transpiration & Translocation practice questions
These are original StudyVector questions for revision practice. They are not official exam-board questions.
Question 1
In one GCSE sentence, explain what Transpiration & Translocation is testing.
Answer: Transpiration is the process of water movement through a plant and its evaporation from leaves, which creates a continuous transpiration stream pulling water up from the roots. Translocation is the movement of sugars (produced during photosynthesis) from the leaves to other parts of the plant whe...
Mark focus: Precise definition and topic focus.
Question 2
A Transpiration & Translocation question uses an unfamiliar context. What should the answer do before adding detail?
Answer: It should name the process, variable, equation, particle model, or evidence being tested, then explain the result using precise scientific vocabulary.
Mark focus: Method selection and command-word control.
Question 3
A student makes this mistake: "Confusing transpiration with translocation. Transpiration is the movement of water (in the xylem), while translocation is the movement of food/sugars (in the phloem)." What should their next repair task be?
Answer: Do one Transpiration & Translocation question and review the mistake type.
Mark focus: Error correction and next-step practice.
Transpiration & Translocation flashcards
Core idea
What is the main idea in Transpiration & Translocation?
Transpiration is the process of water movement through a plant and its evaporation from leaves, which creates a continuous transpiration stream pulling water up from the roots. Translocation is the movement of sugars...
Common mistake
What mistake should you avoid in Transpiration & Translocation?
Confusing transpiration with translocation. Transpiration is the movement of water (in the xylem), while translocation is the movement of food/sugars (in the phloem).
Practice
What is one useful practice task for Transpiration & Translocation?
Answer one Transpiration & Translocation question and review the mistake type.
Exam board
How should you use board notes for Transpiration & Translocation?
Covered by all major boards (AQA, Edexcel, OCR). Understanding the factors affecting transpiration is a key area, often investigated with a potometer in practical work.
Common mistakes
- 1Confusing transpiration with translocation. Transpiration is the movement of water (in the xylem), while translocation is the movement of food/sugars (in the phloem).
- 2Thinking transpiration is just water loss. While it is water loss, this evaporation is vital for pulling water and dissolved mineral ions up the plant from the roots.
- 3Forgetting that translocation requires energy. Moving sugars in the phloem is an active process, unlike the passive movement of water in the transpiration stream.
Transpiration & Translocation exam questions
Exam-style questions for Transpiration & Translocation with mark-scheme style solutions and timing practice. Aligned to AQA, Edexcel, OCR, WJEC, Eduqas, CCEA, Cambridge International (CIE), SQA, IB, AP specifications.
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Step-by-step method
Step-by-step explanation
4 steps · Worked method for Transpiration & Translocation
Core concept
Transpiration is the process of water movement through a plant and its evaporation from leaves, which creates a continuous transpiration stream pulling water up from the roots. Translocation is the mo…
Frequently asked questions
What factors affect the rate of transpiration?
The rate of transpiration is increased by higher temperature, stronger wind, and lower humidity, as these factors all increase the rate of evaporation. Increased light intensity also increases the rate as it causes the stomata to open.
Where does translocation move sugars to?
Translocation moves sugars from the leaves (the source) to areas of the plant that need energy, such as growing tips (meristems), flowers, and roots for storage (the sinks).