In winter, salt is spread on roads to stop ice forming. Some of the salt dissolves in rainwater and enters the soil next to the roads.
Plants growing next to the roads wilt.
Explain why.
Some plants grow in salty soil near the sea. Their root cells use active transport to take in salt ions from the soil and store them in the cytoplasm and vacuole.
Suggest how this allows these plants to take up water from salty soil.
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.