Register To Attempt Complete Test
Sunflower seedling, growing in moist soil in a flower pot, was placed inside a cardboard box with a lid. A window was cut in one side of the box to admit light on the right-hand side of the seedlings. The drawing shows the shoot of one of the seedlings at the start of the experiment.
(i) What name is given to the response made by the seedling?
(ii) What was the stimulus which produced this response?
(iii) What control experiment could be set up to check that the response was made to the stimulus suggested in (b)?