Free Xylem & phloem questions for IGCSE Biology (0610), part of Transport. Each question has the answer and the marking points an examiner would look for.
Generate a full Xylem & Phloem worksheet →All Transport questionsXylem and phloem are transport tissues in plants.
1 Xylem vessels are made of dead cells strengthened with lignin.
2 Phloem transports sucrose and amino acids.
3 Xylem vessels have cross-walls with sieve plates.
Which statements are correct?
Answer: B
Which statement describes phloem?
Answer: C
Xylem and phloem are transport tissues in plants.
1 Xylem transports water from the leaves to the roots.
2 Phloem can transport substances both up and down the plant.
3 Xylem vessels have cross-walls with sieve plates.
Which statements are correct?
Answer: D
Xylem and phloem are found in vascular bundles.
Describe the position of xylem in a root and in a stem.
Explain why the root hair cells have a large surface area.
| Part | Answer and marking points | Marks |
|---|---|---|
| (a) | centre of root; inner side of bundles in stem root: in the centre B1 stem: towards the inside of the vascular bundles (in a ring) B1 | 2 |
| (b) | absorb water and ions faster to increase absorption of water and mineral ions B1 | 1 |
A celery stalk is placed in water containing a red dye.
Predict where the dye will be found after a few hours.
Explain why the dye moves up the stalk.
| Part | Answer and marking points | Marks |
|---|---|---|
| (a) | xylem vessels in the xylem vessels B1 | 1 |
| (b) | transpiration pull water is lost from the leaves by transpiration B1 this pulls water up the xylem B1 | 2 |
Xylem and phloem are transport tissues in plants.
State what is transported in xylem and in phloem.
Describe two ways in which xylem vessels are adapted for their function.
| Part | Answer and marking points | Marks |
|---|---|---|
| (a) | water and ions; sucrose and amino acids xylem: water and mineral ions B1 phloem: sucrose and amino acids B1 | 2 |
| (b) | no cross walls; lignin; hollow hollow / no cross walls (continuous tube) B1 thick walls with lignin for support B1 | 2 |
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