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Biodiversity Exam
| Question | Answer |
|---|---|
| Biodiversity definition | the variety of life within a specific ecosystem which also includes the variability within and between species and of ecosystems |
| Factors that effect biodiversity | climate change, invasive species, pollution, exploiting the land, habitat destruction, disease |
| How is biodiversity measured? | species richness and abundance |
| Importance of biodiversity | influences food and energy security, vulnerability to natural hazards, health, material wealth, freedom of choice, spiritual and religious values, and social relations, increased diversity in genes, poverty reduction, global economic benefit |
| Three components of biodiversity | diversity of genes, number of species, and ecosystems |
| Causes of breakdown of biodiversity | swidden agriculture, commercial logging, cattle ranching, habitat loss |
| Post-zygotic barriers and examples | mating actually occurs reduced hybrid viability - zygote fails to grow decreased fertility - fails to produce viable gametes hybrid breakdown - leads to illness or mutations |
| Pre-zygotic barriers and examples | before fertilization (mating does not occur) temporal isolation - mating patterns=different seasons habitat isolation - different habitats behavioral isolation - no attraction mechanical isolation - structural differences gametic isolation - gametes |
| Species definition | a group of populations whose members can interbreed |
| Ecosystem definition | a self-contained community of microorganisms, animals, and plants, that interact with each other and with their physical enviornment |
| Habitat definition | physical and chemical description of where a creature lives (might describe the dominant vegetation, type of place) |
| Species richness definition | number of different types of species or organisms |
| Abundance definition | number present of a particular species รท the total number x 100 = percent or fraction value |
| Intrinsic value definition | something that has value in and of itself |
| Utilitarian value definition | the value of something acts as a means to another's end {ex: sustainable timber (goods), skiing, scuba diving (services and recreation), national park ranger (information)} |
| Taxonomy definition | the science of naming organisms |
| Order of classification | Kingdom Phylum Class Order Family Genus Species |
| Scientific naming | binomial nomenclature - same name no matter where you go |
Created by:
sammyogdahl
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