Question 2
FA student grew some cress seedlings in a box. Light could only enter the box through a narrow slit in one side.
The Figure shows the seedlings after three days.
Figure
a.[1]
Name the response shown by the shoots of the seedlings.
b.[1]
Name the plant hormone that causes this response.
c.[1]
Give one advantage to the seedlings of this response.
d.[1]
The student set up a second box with light coming evenly from above.
Describe how the shoots of the seedlings in the second box would grow.
e.[1]
State the independent variable in this investigation.
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.