Flashcards in Unit 1 - Ecology Deck (42):
Why are producers so important to an ecosystem?
Producers are important for photosynthesis, cellular respiration, and food. This is because they give energy and oxygen, which is needed to survive. They are also used as a food source
What is the difference between trophic level and ecological niche?
Ecological Niche- The role/position an organism has in its ecosystem (i.e. producer, consumer, composer).
Trophic Level- The actual level an animal is on a food web.
What is "carrying capacity"?
The number of things an ecosystem can support without environmental degradation.
What is "tolerance range"?
How much and little of a species an ecosystem can support. Two numbers
What is "optimal range"?
What is most ideal for the population of an animal. Two numbers (somewhere in between high and low).
What are 4 limiting factors that may be influencing the population of hares in addition to predation?
Poaching, pollution, deforestation, residential/commercial building
Identify if the following statement refers to cellular respiration, photosynthesis, or both. It occurs in producers.
Identify if the following statement refers to cellular respiration, photosynthesis, or both. It occurs in consumers.
Identify if the following statement refers to cellular respiration, photosynthesis, or both. Requires sunlight to occur.
Identify if the following statement refers to cellular respiration, photosynthesis, or both. Produces carbon dioxide.
Identify if the following statement refers to cellular respiration, photosynthesis, or both. Releases energy.
What is the word equation for cellular respiration?
Sugars + O2>H2O + CO2
What is the word equation for photosynthesis?
H2O + CO2>Sugars + O2
Explain how the equations for cellular respiration and photosynthesis are the basis for the carbon cycle.
Photosynthesis starts it, bringing sugars and oxygen out. Creates energy. Cellular respiration uses the stored energy. The plants and animals in photosynthesis and cellular respiration are apart of the biosphere.
Identify 2 human impacts that are affecting the sustainability of the carbon cycle.
Deforestation, burning fossil fuels
If wolves were hunted and removed from a population that is smaller than the moose population, would the moose population continuously increase?
No, limiting factors are food, space, water, disease, reproduction
Where does photosynthesis occur?
Where does cellular respiration occur?
When does photosynthesis occur?
In the presence of light.
When does cellular respiration occur?
All of the time.
What is photosynthesis's energy source?
What is cellular respiration's energy source?
Identify if the following statement refers to cellular respiration, photosynthesis, or both. Stores energy.
Difference between predator and prey
Predator- The animal in which is the hunter
Prey- The animal being hunted
Explain how predator and prey relates to sustainability.
Must be sustainable because if it is not, it will create an unbalance in the ecosystem, causing it to be unsustainable.
What is the source of energy in a food web?
Explain the difference between matter (nutrients) and energy in a food web.
Nutrients cycle (matter), energy flow
Why is the hawk important to the sustainability of this ecosystem (highest trophic level).
If it becomes special concern or worse, it will disrupt the food web. Since they eat animals on the trophic level lower, they will overpopulate. The hawk keeps the numbers of others in tact.
All the water on and just above Earth (lithosphere, atmosphere, biosphere, hydrosphere).
Mountains, sand, rock (lithosphere, atmosphere, biosphere, hydrosphere).
All life on Earth ((lithosphere, atmosphere, biosphere, hydrosphere).
All of the air on Earth (lithosphere, atmosphere, biosphere, hydrosphere).
What is "abiotic"?
Non-living (includes dead animals)
What is "biotic"?
A sustainable ecosystem is one that _____________.
Has predictable and balanced abiotic and biotic features.
In a pyramid of biomass, the __________ tend to have the largest mass.
What is "biomass"?
The mass of living biological organisms in a given area or ecosystem at a given time.
No longer exists in an area.
Define "special concern".
Extremely uncommon or has highly specific habitat requirements. Deserves monitoring of its status.
Likely to become endangered.
A species is threatened with extinction.