IGCSE›Oxford AQA IGCSE Biology›Mind mapsAdaptations, interdependence and competitionOxford AQA IGCSE Biology: Mind mapStudy pack PDFAlso for this subtopic:Revision notesFlashcardsSubtopic testCover factsThree typesStructural: physical featuresBehavioural: actionsPhysiological: internal processesHot and coldDesert: concentrated urine saves waterDesert: large ears lose heat by radiationArctic: thick fur and blubberArctic: white camouflage, hibernationDeep seaBioluminescence makes lightLarge eyes or no eyesTolerate high pressureChemosynthetic nutritionAdaptationssurviving extremesSA:VPlantsDesert: waxy cuticle, reduced leavesRainforest: large leaves for lightArctic: compact, grow quicklyWetland: air spaces and aerial rootsSA:V and heat (HT)Small animals: high SA:V, lose heat fastLarge animals: low SA:V, lose heat slowlyCube of side 2 cm: SA:V=24÷8=3:1\text{SA:V} = 24 \div 8 = 3:1SA:V=24÷8=3:1Exam tipsState which type of adaptationExplain why it aids survivalLarge ears are for cooling, not hearing