Question 2
FA student investigated which part of a shoot detects light.
The Figure shows how four shoots, A, B, C and D, were set up. All four shoots received light from the right-hand side only.
Figure
The Table shows the results after two days.
Table
| Shoot | Result after two days |
|---|---|
| A | bent towards the light |
| B | did not bend and grew very little |
| C | grew straight upwards and did not bend |
| D | bent towards the light |
a.[2]
Explain why shoot B did not bend.
b.[2]
Explain why shoot C grew upwards but did not bend.
c.[2]
Explain why shoot D was included in the investigation.
d.[1]
Give one conclusion from these results about which part of the shoot detects light.
6.3 Plant hormones Questions
46 exam-style questions on Edexcel GCSE Biology 6.3 Plant hormones, covering 6.3.1 Plant hormones and tropisms and 6.3.2 Commercial uses of plant hormones. Each one has a worked solution and a mark scheme showing where the marks go.