Populations
Ecological Succession
Biogeochemical cycles
Photosynthesis and Cell Respiration
Energy Flow in Ecosystems
100
Name one limiting factor affecting population growth.
Food, Water, Nutrients, Resources, Competition, Predators, Disease, Nat'l Disasters, Sunlight
100
What kind of event might cause primary succession?
Glacier, Volcanic eruption, Construction, A flood or landslide
100
What 2 processes primarily cycle carbon in the biosphere?
Photosynthesis and Cellular Respiration
100
Write the balanced equation for photosynthesis.
6CO2+6H2O-->C6H12O6+6O2
100
What is the difference between a food chain and food web?
A food chain shows a series of organisms and their feeding relationships, a food web shows the feeding relationships of an entire ecosystem.
200
What is Carrying Capacity
The limit a population can grow to.
200
What kind of event might cause secondary succession?
Forest fire, Deforestation, any event that leaves soil intact.
200
Describe the process of transpiration in the water cycle.
Water is released as a gas from the leaves of plants
200
Write the balanced equation for cellular respiration.
C6H12O6+6O2-->6CO2+6H2O
200
Examine this food web. What would happen to the deer population if the owl population died out from a disease.
The deer population would decrease due to increased predation from lions.
300
Which of these lines demonstrates logistic growth? Which line demonstrates exponential growth?
Line A is exponential growth and line B is logistic growth.
300
What role do pioneer species play in primary succession?
Pioneer species like lichen help to weather and break down bare rock to begin soil formation.
300
What sphere does phosphorus not cycle through?
The Atmosphere
300
How are photosynthesis and cellular respiration interdependent?
The products of Photosynthesis are the reactants of Cellular Respiration and vice versa. The reactions are opposites.
300
Explain the 10% rule of energy transfer in ecosystems.
The 10% rule states that 90% of energy is lost as heat while energy moves up trophic levels. Only 10% of energy will make it to the next trophic level.
400
What is the relationship between predator and prey populations?
As prey increase predators increase
400
A soil sample has the following component percentages
Clay: 20%
Silt: 30%
Sand 50%
Use the soil triangle to identify the soil texture.
The soil is loam
400
Which cycle can be accurately represented by the letter X.
The Carbon Cycle
400
Describe the transformation of energy as it moves through photosynthesis and cell respiration.
Solar energy is converted to chemical energy stored in the form of glucose in photosynthesis. The chemical energy stored in glucose is then converted into chemical energy in the form of ATP during cell respiration.
400
If 3000J of energy are available to primary producers in an ecosystem, how much energy will be available to a secondary consumer?
30J
500
What are the upper and lower limits for the 80% prediction interval for global human population in 2050 based on this graph?
The upper limit is ~11.8 Billion and the Lower Limit is ~8.6 Billion.
500
A soil sample has the following component percentages
Clay: 40%
Silt: 5%
Sand: 55%
Use the soil triangle to identify the texture of the soil.
The soil is Sandy Clay
500
Nitrogen fixing bacteria convert nitrogen gas from the atmosphere into a for that is usable in plants.
500
How can you explain the increase in CO2 seen during the night and the decrease of CO2 in the day.
Photosynthesis compensates for the CO2 in the air during the day due to its use of sunlight as an energy source.
500
Calculate the energy available to organisms at the Z level of the energy pyramid is organisms at the X level have 14.36J available to them.
1436J