The Need for Transport Systems
The Need for Transport Systems
Single-celled organisms can rely on simple diffusion to meet their needs. However, multicellular plants require specialized vascular transport systems due to three primary factors: size, surface area to volume ratio (SA:V\text{SA:V}SA:V), and metabolic demands.
Step-by-step lessons on OCR A A Level Biology Transport in plants. Each one builds up to exam-style questions. Build a strong foundation in cell biology and biochemistry early on, since later topics on genetics, ecology and physiology all draw on these core concepts.