OCR•A-Level•Biology
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Exchange and Transport
Gas exchange, transport systems in plants and animals
Practice 56 subtopics in Exchange and Transport. All questions match the OCR A-Level specification.
About Exchange and Transport
Exchange and Transport is a key topic in the OCR A-Level Biologyspecification. This topic covers gas exchange, transport systems in plants and animals.
Master all 56 subtopics below with unlimited AI-generated questions. Each subtopic page includes sample questions and the ability to generate unlimited practice questions with detailed solutions.
All Subtopics (56)
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Surface area to volume ratioExchange surface featuresSpecialised exchange surfacesGas exchange in insectsSpiraclesTracheaeGas exchange in fishCounter-current flowGas exchange in amphibiansGas exchange in plantsStomataGuard cellsXerophytesHydrophytesGas exchange in mammalsLung structureAlveoliVentilationPAG 6: DissectionNeed for transport systemsSingle circulatory systemDouble circulatory systemHeart structureCardiac cycleCardiac outputHeart rate controlBlood vesselsArteriesArteriolesCapillariesVenulesVeinsBlood compositionPlasmaRed blood cellsWhite blood cellsPlateletsHaemoglobinOxygen transportOxygen dissociation curveBohr effectFoetal haemoglobinCarbon dioxide transportTissue fluid formationLymphPAG 7: Heart dissectionXylem structurePhloem structureTranspirationCohesion-tension theoryRoot pressureFactors affecting transpirationTranslocationMass flow hypothesisSource and sinkPAG 8: Plant transport
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