What is the first step in setting up an experiment to investigate seed dispersal distances?

Obtain fruit containing seeds, such as sycamore seeds or horse chestnut seeds.

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How should you drop each seed when investigating dispersal distances?

Drop one seed at a time from a fixed height directly above a marked point on the ground.

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What tool should you use to measure how far seeds travel along the ground?

Use a tape measure to measure the distance seeds travel from the drop point.

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How many times should you repeat the seed drop for each seed type?

Repeat the seed drop at least three times for each seed type.

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What should you calculate after measuring the dispersal distances for each seed type?

Calculate the average dispersal distance for each seed type.

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What are three factors that must stay the same to ensure a fair comparison between seed types?

  1. The person dropping the seed
  2. Height the seed is dropped from
  3. Location of the experiment (avoid draughts from doors/windows)

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Why is it important to avoid draughts from doors or windows when investigating seed dispersal?

Draughts can affect the dispersal distances and make the comparison between seed types unfair.

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What can you add to the experiment to test how wind affects seed dispersal?

Add a fan to create wind and test its effect on seed dispersal.

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Where should you position the fan in relation to the seed drop point?

Position the fan a set distance from the seed drop point.

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