A plant stem becomes thicker as it grows. Stem cells are found in the cambium, a ring of tissue inside stems and roots.
Describe how cells in the cambium contribute to the stem becoming thicker.
194 exam-style questions on OCR GCSE Biology 2.1 Supplying the cell, covering 2.1.1 Transport across cell membranes, 2.1.2 Mitosis and the cell cycle, 2.1.3 Importance of cell differentiation, and 2.1.4 Stem cells. Each one has a worked solution and a mark scheme showing where the marks go.