A young root is placed horizontally. Auxin accumulates on its lower side.
What is the effect of this increased auxin concentration?
less elongation on the upper side of the root
more elongation on the lower side of the root
equal elongation on the two sides of the root
less elongation on the lower side of the root
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.