* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download 12/9/10 Practice Test Exam 4
Survey
Document related concepts
Unified neutral theory of biodiversity wikipedia , lookup
Introduced species wikipedia , lookup
Ecological fitting wikipedia , lookup
Molecular ecology wikipedia , lookup
Latitudinal gradients in species diversity wikipedia , lookup
Island restoration wikipedia , lookup
Occupancy–abundance relationship wikipedia , lookup
Habitat conservation wikipedia , lookup
Biodiversity action plan wikipedia , lookup
Reconciliation ecology wikipedia , lookup
Transcript
Handout Title: Subtitle Supplemental Instruction Iowa State University Leader: Course: Instructor: Date: Cody Biology 211 (1) Dr. Serb 12/9/10 1. The ____ growth model takes into account density dependent factors that limit population growth. a. exponential b. interspecific c. logistic d. intraspecific 2. Chameleons will often alter their coloration to blend in with their background. This is a form of ___coloration. a. Mullerian b. Cryptic c. Camouflaged d. Batesian 3. The placement of the major biomes of the Earth is determined by differences in ___. a. temperature and precipitation b. soil and wind c. proximity to mountain ranges or oceans d. temperature 4. Territorial species, such as large cats (tigers, leopards), typically have a ____ dispersal pattern. a. random b. harem with a lead male c. uniform d. clumped 5. If an each individual from a species has an equal chance of dying throughout each individual's life span, the population has a ____ . a. Type I survivorship curve, like humans b. Type II survivorship curve, like squirrels c. Type III survivorship curve, like oysters d. Type II survivorship curve, like oysters Supplemental Instruction 1060 Hixson-Lied Student Success Center 294-6624 www.si.iastate.edu 6. Which of the following is a density independent limitation to population growth? a. starvation b. infectious disease c. buildup of waste products d. blizzards 7. If a population has 40% of its population over reproductive age, 35% at reproductive age, and 25% at pre-reproductive age, it is ___. a. rapidly increasing b. slowly increasing c. decreasing d. unchanging 8. An animal's realized niche differs from its fundamental niche because ___. a. interspecific competition limits its fundamental niche b. intraspecific competition expands its fundamental niche c. interspecific competition limits its niche, changing a fundamental to a realized niche d. intraspecific competition limits its growth 9. Commensal organism’s ____. a. gain without helping or harming another species b. lose nutrients to other species c. lose nutrients due to competition d. gain nutrients at the expense of other species 10. Male lions often compete for leadership of a pride and breeding opportunities with a "harem" of females. This phenomena is best described as _____. a. interspecific competition b. commensalism c. intraspecific competition d. resource partitioning 11. A cluster of flowering plants is only found under shade trees. If there are 4 such trees in a 10 acre field, these flowering plants would have a ____ distribution. a. clumped b. uniform c. K-selected d. Random 12. All nonliving factors, such as temperature, light, water and nutrients are considered ____ factors influencing an environment. a. abiotic b. rocks c. biotic d. soil 13. If you place two species of bacteria that use the same food sources in a single flask, over time one will thrive and other will die. This phenomena is common in biology and is called ____. a. phagocytosis b. competitive exclusion c. fighting till the death d. exocytosis 14. Exponential growth models ___. a. take into account density dependent but not density independent limitations to population growth. b. All of these c. work best for dominant rather than keystone species population growth estimates. d. None of these e. are best used to calculate the size of territorial species ranges 15. If you remove a predator, such as a starfish, from an area, like a clam bed, and the # of different species in the clam bed goes down, what can we say about the starfish? a. It was a keystone predator b. It was the dominant species c. It is a regulator, not a conformer d. It’s cute. 16. A populations carrying capacity a. Can be accurately calculated using the logistic growth model. b. Generally remains constant over time. c. Can never be exceeded. d. May change as environmental conditions change. 17. The feeding relationships among the species in a community determine the community’s a. Ecological niche b. Trophic structure c. Species richness d. Specie-area curve 18. Food chains are somewhat short because a. Most of the energy in a trophic structure level is lost as it passes to the next higher level. b. Only a single species of herbivore feeds on each plant species. c. Local extinction of a species causes extinction of the other species in its food chain. d. Predator species tend to be less diverse and less abundant than prey species. 19. Which of the following organisms is incorrectly paired with its trophic level? a. Cyanbacterium: primary producer b. Grasshopper: primary consumer c. Humans: primary producer d. Fungus: detritivore 20. Which of these ecosystems has the lowest primary production per square meter? a. A salt marsh b. An open ocean c. A coral reef d. A grassland 21. Nitrifying bacteria participate in the nitrogen cycle mainly by a. Converting nitrogen gas to ammonia b. Releasing ammonium from organic compounds, thus returning it to the soil. c. Converting ammonia to nitrogen gas, which returns to the atmosphere. d. Converting ammonium to nitrate, which plants absorb. 22. Ecologists conclude there is a biodiversity crisis because a. Current extinction rates are very high and many species are threatened or endangered. b. Scientists have at last discovered and counted most Earth’s species and can now accurately calculate the current extinction rate. c. Many potential life-saving medicines are being lost as we evolve. d. There are too few biodiversity hot spots. 23. The discipline that applies ecological principles to returning degraded ecosystems to more natural states is known as a. Landscape ecology b. Conservation ecology c. Restoration ecology d. Resource conservation 24. What is the single greatest threat to biodiversity? a. Introduced species that compete with or prey on native species. b. Habitat alteration, fragmentation, and destruction. c. Pollution of Earth’s air, water, and soil. d. Disruption of trophic relationships as more and more prey species become extinct. 1. C 2. B 3. A 4. C 5. B 6. D 7. C 8. C 9. A 10. C 11. A 12. A 13. B 14. D 15. A 16. D 17. B 18. A 19. C 20. B 21. D 22. A 23. B 24. D