Study Guide for Examination - Introduction to Ecology | HBIO 320, Exams of Ecology and Environment

Download Study Guide for Examination - Introduction to Ecology | HBIO 320 and more Exams Ecology and Environment in PDF only on Docsity! Ecology Lecture Outline and Study Guide Morehouse College BIO 320 1 Key to Section IV Problems and Sample Examination Questions 1. Biological communities are most accurately characterized as: a. collections of species in a given habitat b. a super organism with self-regulation c. constant composition species assemblages d. all of the above 2. The Index of Similarity is a measure of: a. proportion of species sharing similar niches b. proportion of species found in two locations c. number of species located in one location d. number of species located in two locations 3. Biological communities that have high species richness are likely to be more stable than communities with low species richness because: a. high species richness results in barriers to human disturbance b. retention of limiting nutrients increases with species richness c. tropical communities are more difficult to disturb than others d. all of the above 4. Net primary production can be defined as the: a. energy captured by photosynthesis minus maintenance costs b. energy consumed by all the primary consumers c. biomass produced by all the primary consumers d. total energy captured by photosynthesis 5. The net primary production (NPP) rate (g/m2) of the open ocean is most similar to that of: a. freshwater swamps b. deserts and tundra c. lakes and streams d. temperate forests Ecology Lecture Outline and Study Guide Morehouse College BIO 320 2 6. The efficiency by which insects convert assimilation energy into biomass is approximately ___times greater than the production efficiency of a mammal. a. 0.1 b. 1.0 c. 10 d. 100 7. If you were to use the gas exchange method of evaluating primary production in a lake ecosystem, the purpose of a dark (opaque) bottle is to measure: a. gross production rates b. secondary production c. net primary production d. total respiration rates 8. Energy flux in nature is: a. an open system b. a closed system c. a recycling flow d. none of the above 9. Limitations on primary production in nature include: a. temperature b. water c. nutrients d. all of the above 10. Carbon dioxide is an important component of the atmosphere because: a. it is the most abundant gas in the atmosphere b. it causes skin cancer and respiratory diseases c. autotrophic organisms get energy from this gas d. it is a greenhouse gas and input for photosynthesis 11. The increase in concentration of persistent molecules as they move through a food chain is called: a. biomolecular fixation b. heterotrophic magnification c. biological magnification d. biogeochemical fixation