Who this is for: Cambridge IGCSE Biology (0610) students who know phloem transports sucrose but cannot explain loading at the source, mass flow or why ring-barking stops translocation downstream.
What query it owns: how to use the Translocation of Food 2 flashcard resource in Cambridge IGCSE Biology (0610).
Why this is safe: this page owns the flashcard workflow angle for translocation part 2, while Tutopiya’s Translocation of Food 2 flashcard page owns the card set and the flashcard quiz owns the check.

Translocation of food part 2 in Cambridge IGCSE Biology (0610) tests the mechanism — how sucrose is loaded into phloem, how water follows by osmosis creating pressure, and how mass flow moves assimilates to sinks. Students lose marks by stopping at “food moves in phloem” without the pressure-flow steps. This guide shows how to work through Tutopiya’s Translocation of Food 2 flashcard resource so mechanism answers earn full method marks.

Key takeaways

• Sucrose is loaded into phloem sieve tubes at the source using energy from respiration.
• Water enters phloem by osmosis, raising hydrostatic pressure at the source.
• Mass flow moves sucrose solution to the sink, where sucrose is unloaded and pressure drops.
• Follow flashcards with the flashcard quiz and Translocation notes.

What is the Translocation of Food 2 flashcard set?

The Translocation of Food 2 flashcard set builds on Part 1 with mechanism detail: phloem loading, osmotic water entry, pressure differences and mass flow to sinks. It sits on Tutopiya’s Translocation of Food 2 flashcard page after Translocation of Food 1 flashcard and alongside full Translocation notes.

Pressure-flow model: what each flashcard should lock in

Step	At source (e.g. leaf)	At sink (e.g. root)
1	Sucrose loaded into phloem	Sucrose unloaded
2	Water enters by osmosis	Water leaves phloem
3	High hydrostatic pressure	Low hydrostatic pressure
4	Mass flow toward sink	Sucrose used or stored

How to use the flashcards — step by step

1. Complete Translocation of Food 1 flashcard first — definitions must be secure.
2. Open Part 2 deck — 10–15 cards per session.
3. Answer in sequence — loading → osmosis → pressure → mass flow.
4. Sort into three piles — confident / unsure / wrong.
5. Re-drill mechanism chains the same day.
6. Take the flashcard quiz.
7. **Apply on Transport in plants topical past paper questions.

Flashcard prompts in past-paper wording

Exam-style prompt	Must-include keywords	Mark-scheme focus
”Explain how sucrose is transported in phloem.”	Loading, osmosis, pressure, mass flow	Full mechanism chain
”Explain why a ring of bark removal kills the roots.”	Phloem in bark, translocation blocked	Applied translocation
”Describe how water is involved in translocation.”	Osmosis into phloem at source	Links two processes
”Suggest why roots are a sink in summer.”	Sucrose used in respiration, growth	Sink concept
”Explain why translocation requires energy.”	Active loading of sucrose	Not the mass flow itself

Worked recall drills (say these aloud on each card)

1. Card front: “Explain mass flow in phloem.” Back: Sucrose loaded at source → water enters by osmosis → high pressure → mass flow to sink → sucrose unloaded → pressure drops.
2. Card front: “Effect of ring-barking?” Back: Phloem removed → translocation to roots stops → roots lack sucrose → plant may die.
3. Card front: “Why energy needed?” Back: Active loading of sucrose into phloem sieve tubes at the source.

Confirm with the Translocation quiz.

How flashcards fit the wider Transport in plants unit

Part 2 completes the food-transport story after Water Uptake and Transpiration. Finish the unit on the Transport in plants topical past paper questions. The Cambridge IGCSE Biology resource hub links all resources.

Common mistakes students make with flashcards

• Describing translocation as only diffusion — mass flow driven by pressure is key.
• Forgetting osmosis brings water into phloem at the source.
• Confusing ring-barking (blocks phloem) with cutting xylem (blocks water).
• Saying energy is needed for movement along phloem rather than loading.
• Skipping Part 1 definitions before Part 2 mechanism.

When you need more support

If explain questions on mass flow still fail, book a Cambridge IGCSE Biology tutor, then repeat the flashcard quiz.

Frequently asked questions

Do I need Part 1 before Part 2? Yes — Part 2 assumes you know source, sink, phloem and what is transported.

How often should I drill Part 2 flashcards? Two to three sessions until you can state the pressure-flow chain without notes.

Will examiners ask about companion cells? Extended papers may reference loading; focus on sucrose loading, osmosis and mass flow for core marks.

What comes after Part 2? Work the full Transport in plants topical past paper questions set.

Ready to lock in translocation mechanism?

Open the Translocation of Food 2 flashcard, then book a free trial with a Cambridge IGCSE Biology specialist.

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