Chapter 2 Flashcards
Natural populations are controlled by density-dependent and density-independent forces. What is an example of a density independent factor?
Adverse weather
True/False
A frog is found along the edge of a pond. This location where it lives would be the frog’s niche
False
The organisms responsible for nutrient flow through an ecosystem are _______.
Decomposers
True/False
While an animal can survive (determined by lab tests) between the temperatures of 10 degrees C. and 30 degrees C, we find in nature that it only occurs between 16 degrees C. and 28 degrees C. This is the difference between the fundamental niche and the realized niche of the animal.
True
True/False
A community is made up of living organisms and their non living environment
False
Commensalism differs from mutualism by the fact that in commensalism…
One organism is not affected
The energy storage in an animal’s tissues is called…
Biomass
An assemblage of living organisms sharing the same environment and having a distinctive unity is referred to as a…
Community
The carrying capacity of the environment is determined by..
The limiting productivity of the environment
An animal’s relationship to all the biotic and abiotic factors in its environment is called its…
Niche
A keystone species is..
A species who’s removal causes major shifts in other species in a community
True/False
A population is the group of individuals belonging to a single species, though not necessarily as a reproductive unit
False
True/False
A study of both the living community and all of the physical factors such as sunlight, soil types, etc. would focus on a more complex level, the ecosystem
True
A series of steps in which plants are eaten by consumers, which are themselves eaten by other consumers, is called a ______
Food chain
Almost all life depends on the energy of the ______
Sun
