Definitions Flashcards
Where do all living things get energy from?
The sun
Interdependence
When organisms rely on other living & nonliving things to survive.
What do arrows mean?
Energy transfer
Primary consumer & example
Rabbit , primary consumer eats only producers & is a heterotroph or herbivore
Secondary consumer & example
Bear, it eats the primary. It’s a carnivore/ heterotroph
Tertiary consumer & example
Tiger, it’s a carnivore/heterotroph
What does a food web tell us about life?
Organisms depend on each other to survive
Chemosynthesis & who uses this?
Use of chemicals to create their energy. Detrivores & decomposes
Homeostasis
Maintenance of a stable level of internal conditions even though the environment is constantly changing
Ex. Temp change body temp stays at 98.6 by sweating
Stimuli
Physical/chemical change in the internal/external environment
Ex. Owl dilates pupil to keep light consistent
Metabolism
Sum of all the chemical reactions that take in and transform energy and material from the environment
Ex. Photosynthesis sun➡️plant human eats food for energy
Biogeochrmical cycles
Nitrogen carbon phosphorus and water
What is a name for an antibiotic that is a control
Placebo
Carrying capacity has what? & is represented by what graph?
Logistic and has units of ex. Per 100 squared meters
Generalist / specialist
Generalist- range of conditions and resources (cockroach)
Specialist- narrow range (hummingbird)
Niche vs habitat
Niche- role/job of a species in its environment
Habitat- place where an organism usually lives
Exponential graph
Does not show limiting factors. Population size grows slowly but then speeds up as individuals join the population.
What are the two kinds of limiting factors ?
Density-Dependent and density-independent factors
DD-variable affected by the number of organisms presented in a given area (resource limitations like food shortages and are triggered by increasing population density)
DI-variable that affects the population regardless of the population density,such as climate,weather,floods,fires
Population density
The number of individuals of the same species that live in a given unit of area
