Populations 0.0 / 5 ? BiologyEcology, ecosystems and environmental biologyA2/A-levelAQA Created by: JoannaCreated on: 20-10-13 11:49 Define ecology? The study of the inter-relationships between organisms and their environment. 1 of 10 What is meant by the term 'abiotic'? An ecological factor that makes up part of the non-biological environment of an organism (e.g. temp, pH,rainfall, humidity) 2 of 10 What is meant by the term 'biotic'? An ecological factor that makes up part of the living environment of an organism (e.g. food availability, competition, predation) 3 of 10 Define what is meant by 'biosphere'? The layer of land, air and water that surrounds the Earth. 4 of 10 Give the two main processes to be considered when looking at an ecosystem? 1. The flow of energy through the system. 2. The cycling of elements within the system 5 of 10 Define 'population'? A group of individuals of the same species that occupy the same habitat at the same time. 6 of 10 Define 'community'? The populations of different organisms living and interacting in a particular place at the same time. 7 of 10 Define habitat? The place where a community of organisms live. 8 of 10 What is a microhabitat? The smaller units within a habitat that have their own microclimates. 9 of 10 What is an ecological niche? All conditions and resources required for an organism to survive, reproduce and maintain a viable population. 10 of 10
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