Which statement about xylem cells is correct?
They are living cells joined by pores in their end walls.
They carry dissolved sugars from the leaves to the roots.
They lose their end walls to form continuous hollow tubes.
Their walls are strengthened by cellulose only.
163 exam-style questions on AQA GCSE Biology 1.1 Cell structure, covering 1.1.1 Eukaryotes and prokaryotes, 1.1.2 Animal and plant cells, 1.1.3 Cell specialisation, 1.1.4 Cell differentiation, 1.1.5 Microscopy, and 1.1.6 Culturing microorganisms. Each one has a worked solution and a mark scheme showing where the marks go.