GENV 205 WEEK 2 QUIZ Quiz 1) Which of the following are biotic? I. Decomposers II. Energy flow III. Producers (1pts) I only II only

GENV 205 WEEK 2 QUIZ Quiz 1) Which of the following are biotic? I. Decomposers II. Energy flow III. Producers (1pts) I only II only III only I and III I, II, and III 2) Which of the following best describes an ecosystem? (1pts) Populations interacting All biotic factors interacting Inter-species relationships Intra-species relationships All biotic and abiotic factors 3) Of the following, which are products of photosynthesis? I. Glucose II. Carbon dioxide III. Water (1pts) I only II only III only I and II I and III 4) Which group of organisms performs photosynthesis? (1pts) Autotrophs Scavengers Heterotrophs Consumers Decomposers 5) Which of the following shows the complex interactions between species within an ecosystem? (1pts) Food chain Food web Food pyramid Energy pyramid Trophic level diagram 6) What are the physical products of cellular respiration? (1pts) Oxygen and carbon dioxide Nitrogen and carbon Glucose and oxygen Water and carbon dioxide Glucose and water 7) Which of the following is the approximate efficiency of the energy transfer as energy flows through the food chain? (1pts) 1% 10% 25% 50% 90% 8) How is the majority of energy within an ecosystem lost? (1pts) Heat loss Energy used to grow biomass Cellular respiration Cellular metabolism Energy used to capture prey 9) What law best relates to energy loss within an ecosystem? (1pts) First law of thermodynamics Second law of thermodynamics Third law of thermodynamics Law of conservation of matter Law of relativity 10) Humans have a considerable effect on the hydrologic cycle. Which of the following has a direct effect on this cycle? I. Deforestation II. Urbanization III. Mining of fossil fuels (1pts) I only II only III only I and II I, II, and III 11) Which of the following is considered to be the most important element in living organisms? (1pts) Carbon Hydrogen Oxygen Phosphorus Nitrogen 12) Which element is the primary component of fossil fuels? (1pts) Carbon Hydrogen Oxygen Phosphorus Nitrogen 13) What relatively recent development is greatly impacting the carbon cycle? (1pts) Photosynthesis Cellular Respiration Formation of fossil fuels Combustion of fossil fuels Formation of carbonate rocks 14) What is a possible result of an increased amount of CO2 in the atmosphere? (1pts) Increased precipitation Decreased photosynthesis Increase in global temperature Decrease in cellular respiration Increase in formation of fossil fuels 15) What group of organisms is primarily responsible for the processes that occur in the nitrogen cycle? (1pts) Autotrophs Heterotrophs Bacteria Detritovores Scavengers 16) When nutrients are transported through soil with water, this process is known as (1pts) infiltration. percolation. decomposition. leaching. nitrification. 17) A scientist is observing a series of plants and measuring their growth with the addition of nutrients.  She notices that the addition of nitrate has no effect on the growth while the addition of phosphorus shows significant growth.  What conclusion can she draw about the nutrients in relation to this plant? (1pts) Phosphorus is a limiting nutrient. Nitrogen is a limiting nutrient. The plant does not require nitrogen. The plant does not require phosphorus. The plant had an excess of nutrients, limiting its growth. 18) What is the major source of phosphorus on land? (1pts) Deposition from atmospheric phosphorus Compounds that are formed by autotrophs during photosynthesis Compounds released from the weathering of rocks Compounds formed from bacterial conversion Compounds dissolved in precipitation 19) What effect would clear cutting within a watershed have on the water quality of a river running through the watershed? (1pts) Decrease in nutrient concentration in the waters of the clear-cut watershed Increase in nutrient concentration in the waters of the clear-cut watershed Decrease in the amount of runoff entering the waters of the clear-cut watershed Increase in the biodiversity of the river Clear-cutting should not have an effect on the water quality of a river. 20) A new field has developed that focuses on restoring damaged ecosystems.  This field is known as (1pts) mitigation ecology. reconciliation ecology. disturbance reconciliation. habitat balancing ecology. restoration ecology. 21) Which ecosystems are considered to be the most diverse? (1pts) Ecosystems experiencing high levels of disturbance Ecosystems experiencing intermediate levels of disturbance Ecosystems experiencing low levels of disturbance Ecosystems experiencing no disturbance Ecosystems that once had high levels of disturbance but have been stable for hundreds of years 22) Which of the following is the best description of a region’s climate? (1pts) The average temperature and precipitation over several decades The average precipitation over a 1–2 year time period The average high temperature of a region The amount of rainfall that an area receives over a period of 1 year The average temperature and rainfall over a period of 1–2 years 23) Which of the following would not have a significant effect on the climate of a region? (1pts) The unequal heating of Earth by the Sun Atmospheric convection currents A single abnormally wet year due to El Niño The rotation of Earth Earth’s orbit around the Sun on a tilted axis 24) In which level of the atmosphere does weather occur? (1pts) Troposphere Stratosphere Mesosphere Thermosphere Exosphere 25) Which level of the atmosphere contains the ozone layer? (1pts) Troposphere Stratosphere Mesosphere Thermosphere Exosphere 26) What is the importance of the ozone layer? (1pts) It plays an important role in the greenhouse effect. It reflects solar gamma radiation that would otherwise reach the Earth’s surface. It acts as an insulator for the Earth and s to maintain a livable temperature. It absorbs incoming UV rays. It reflects incoming heat back into space. 27) What best describes the temperature of the atmosphere? (1pts) It decreases as you increase in altitude in the troposphere. It increases as you increase in altitude. It maintains a constant level throughout the atmosphere. It shows fluctuations up and down as you move through the layers of the atmosphere. It does not change. 28) What is the cause of the differing seasons of the Earth? (1pts) The different distances of the Earth to the Sun based on the elliptical orbit The different lengths of the day during summer and winter The Coriolis effect The tilt of the Earth on its axis The speed of the orbit of the Earth around the Sun 29) What is one major role that these gyres play in global climate? (1pts) Currents redistribute heat from the north to the south. Currents redistribute heat from the equator to northern latitudes. They drive global wind patterns in the northern hemisphere. They contribute to the Coriolis effect. Currents redistribute tropical moisture. 30) What factors are used to classify a biome? I.     Average temperature II.     Average precipitation III.     Distinctive plants adapted to area (1pts) I only II only III only I and II I, II, and III 31) Which of the following is the Earth’s most diverse biome? (1pts) Wetlands Tropical Rainforest Temperate seasonal forest Coral reefs Grasslands 32) What biome has warm temperatures, high precipitation, and little seasonal variation due to its location near the equator? (1pts) Boreal forest Subtropical desert Temperate grassland/cold desert Woodland/shrubland Tropical rainforest

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