GCSE AQA Biology Plant Hormones: This is the method used.

1. Gro

Question

This is the method used.

1. Grow three bean seeds until their roots are 1 cm long.
2. Attach the three bean seeds to moist cotton wool in a Petri dish.
   Each bean seed root should point in a different direction.
3. Fix the Petri dish vertically for 2 days in the dark.

Direction of root growth ________________
Reason ________________

He then:

1. put a light above the Petri dish but did not move the seeds
2. allowed the seeds to grow for 2 more days.

Predict the direction of growth of the bean shoots after 2 days.
Give one reason for your prediction.

At which stage of ripeness is there most ethene?

Tick one box.

Stage 1
Stage 2
Stage 3
Stage 4
Stage 5

Suggest how the scientists can find out if the result for Stage 1 was an anomaly.

Gibberellins are a different type of plant hormone.

Farmers growing cotton plants in cold climates sometimes soak their seeds in a solution of gibberellins before planting the seeds.

Suggest an advantage of soaking seeds in a gibberellin solution in cold climates.

This is the method used - AQA - GCSE Biology - Question 6 - 2018 - Paper 1

Worked Solution & Example Answer:This is the method used - AQA - GCSE Biology - Question 6 - 2018 - Paper 1

Direction of root growth

Reason

Predict the direction of growth of the bean shoots after 2 days.

Give one reason for your prediction.

At which stage of ripeness is there most ethene?

Suggest how the scientists can find out if the result for Stage 1 was an anomaly.

Suggest an advantage of soaking seeds in a gibberellin solution in cold climates.

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