GCSE Combined Science Plant transport questions by topic

This question is about the tissues inside a leaf.

1. (a)Name the tissue that is the main site of photosynthesis.[1]
2. (b)Name the tissue that carries water into the leaf.[1]
3. (c)Name the cells that control the size of the stomata.[1]
4. (d)Name the layer that stops the leaf drying out.[1]

Compare xylem and phloem.

1. (a)State what each tissue transports.[2]
2. (b)State which tissue is made of dead cells.[1]
3. (c)State the direction of transport in the phloem.[1]

Describe how water travels from the roots to the air.

1. (a)Name the process by which water enters root hair cells.[1]
2. (b)Name the tissue that carries water up the stem.[1]
3. (c)Describe what happens to the water in the leaf.[2]

This question is about root hair cells.

1. (a)Explain how the shape of a root hair cell helps water uptake.[2]
2. (b)Name the process that brings mineral ions into the cell and state what it costs.[2]

A potometer-style setup tracks a shoot’s water uptake.

1. (a)Calculate the uptake rate in still air, in cm³ per minute.[1]
2. (b)Calculate how many times faster uptake is with the fan.[2]
3. (c)Explain the effect of the fan.[1]

Explain how the leaf’s structure suits it for photosynthesis and gas exchange.

1. (a)Give two features that help photosynthesis.[2]
2. (b)Give two features that help gas exchange.[2]
3. (c)Name the trade-off the plant accepts.[1]

A student counts stomata in five microscope fields of view.

1. (a)Calculate the mean number of stomata per field.[2]
2. (b)The upper surface mean is 4 per field. Suggest why the lower surface has more.[2]

Describe the water movements that open and close a stomatal pore.

1. (a)Describe what happens when the stoma opens.[2]
2. (b)Describe what triggers closing and why it helps.[2]

A grower moves seedlings from a cool greenhouse to a hot, dry, sunny windowsill.

1. (a)Predict what happens to the transpiration rate.[1]
2. (b)Explain the prediction using three conditions.[3]
3. (c)State one response the seedlings could make to limit water loss.[1]

A farmer stores potatoes (sugar-storing tubers) and sells cut spinach (leaf crop).

1. (a)Explain how sugars reach the tubers and the harvested leaves.[3]
2. (b)Explain why a cut spinach leaf wilts within hours even if kept cool.[3]

A student claims: “Plants need the xylem for sugars and the phloem for water.”

1. (a)State whether the claim is correct.[1]
2. (b)Correct both halves of the claim.[2]
3. (c)Describe one structural feature of each tissue that suits its cargo.[2]

Design an investigation into whether wind changes the transpiration rate.

1. (a)State the independent and dependent variables.[2]
2. (b)Give two conditions you would control and say why one matters.[2]