Question Details

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)
hosphorus 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- 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- 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- surface. 
It acts as an insulator for the Earth and helps 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- 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