Nutrient Cycles
Ecosystems
Population Dynamics
Ecosystems 2
Miscellaneous
100
This process removes Carbon from the atmosphere
What is photosynthesis?
100
This is the starting energy source that producers use
What is sunlight?
100
The maximum number of individuals that can be supported in an ecosystem with a defined amount of resources
What is carrying capacity?
100
Name and give an example of this type of factor: Not alive and never was alive.
Abiotic Factor: Examples include water, nutrients, CO2, rock, sun, heat, climate, etc...
100
A decrease in organisms that occupy this ecological role will have the greatest impact on the ecosystem
What are producers?
(I would also accept "Key Stone Species")
200
This process uses glucose and oxygen and produces carbon dioxide, water and energy
What is cellular respiration?
200
This term refers to organisms that eat both plants and animals
What is an omnivore?
200
Competition and predation are examples of this type of limiting factor
What is density dependent?
200
This is another term for producers/plants and means that the organism can make its own food
What is an autotroph?
200
This pyramid is correctly displaying what rule?
What is the 10% rule?
300
These organisms recycle nutrients back to the soil
What are decomposers?
OR
What are fungi and bacteria?
300
This is the amount of energy transferred from one trophic level to another
What is 10%?
300
Give an example of a Density Independent limiting factor
Natural Disaster (like forest fire, earthquake, flood, etc...) or seasonal changes
300
This is the ecological hierarchy from smallest to largest.
Individual, population, community, ecosystem
(Technically you can include Biome and Biosphere after ecosystem - but we didn't discuss those as much in class this year)
300
When organisms have a set amount of food, we see this type of population growth
What is logistic growth?
400
These are the four most abundant elements in living organisms (atomic symbols are okay)
What are Carbon (C), Oxygen (O), Hydrogen (H), and Nitrogen (N)?
400
What is a species that is not found in the historic area but is found in other areas (eg. bison in Manitoba)
What is an extirpated species?
400
This term refers to an organism which is introduced to an area and negatively impacts the native organisms
What is an invasive species?
400
Explain why there are less predators at the top of a food web.
There is not enough energy available to support larger population.
400
If a hawk eats a rabbit that eats grass with 862kCal of energy, the hawk is getting this much energy.
What is 8.62 kCal ?
500
Why can't plants and animals use N2 found in the atmosphere (be specific!)
N2 has a triple bond which is very difficult to break
500
This is what would happen if we removed the rabbit from this food web (name 2 organisms and how they would be affected)
What is a decrease in the fox population and an increase in the grass population?
500
A population in which organisms are free to come and go
What is an open population
500
Explain why biodiversity is important in an ecosystem.
A more diverse community can withstand shifting environmental conditions and maintains more stable populations
500
Draw a complete food web for the following ecosystem. The grasshopper and ground squirrel are both herbivores. The grasshopper is eaten by the scorpion. The squirrel and the scorpion are both eaten by the kit fox. The squirrel is also eaten by the golden eagle.
