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level: Biodiversity

Questions and Answers List

level questions: Biodiversity

QuestionAnswer
What does SDI measure?It measures the diversity of an organism in an ecosystem. Accounts both the number of species present, and the abundance of each species.
Define biodiversityThe variety of plant and animal life in a particular habitat or ecosystem.
What are the primary measures of biodiversity?Percentage cover, percentage frequency, species richness, species abundance and evenness, SDI (Simpsons diversity index).
Define abiotic factorsA non-living component of an ecosystem that impacts the environment and organisms.
Define biotic factorsA living organism within an ecosystem that impacts the environment.
What is competition?An interaction between organisms or species in which both require a resource that is in limited supply.
What is predation?A biological interaction where one organism kills and eats another organism.
What is symbiosis?A mutually beneficial relationship between different organisms, where both benefit.
Define an ecosystemA geographic area where plants, animals, and other organisms, as well as weather and landscape, work together to form a bubble of life
Explain how environmental factors limit the distribution and abundance of species in an ecosystem.Factors such as: temperature, water availability, nutrient availability, and habitat suitability determine the distribution and abundance of species in an ecosystem by setting limits on their survival, reproduction, and ecological requirements.
Define parasitismA symbiotic relationship where one organism, the parasite, benefits by living off or within another organism, the host, often causing harm or weakening the host in the process.
Define mutualismA symbiotic relationship between two species where both individuals benefit from each other's presence, often through the exchange of resources or services.
Define commensalismA symbiotic relationship where one organism benefits without harming or significantly benefiting the other organism involved.
Define amensalismA symbiotic relationship in which one organism is negatively affected or inhibited by another organism, without any significant impact on the other organism.