ecology quiz Flashcards
A group of similarly constructed individuals that can interbreed to produce fertile offspring, share a common gene pool, and are identified by molecular, physical, behavioral, and other characteristics.
species
The total weight of organisms in a given area or location.
biomass
The greatest number of individuals that a given environment can sustain is its ___________.
carrying capacity
Which of the following are biotic factors that can be compared between sampling sites? (choose all that apply)
biodiversity , species richness, plant biomass
Which of the following ecosystems would be characterized by a forest of coniferous trees at high altitudes.
alpine forest
Consists of the biotic (living) components of a particular area together with the associated abiotic (nonliving) components of the area.
ecosystem
Competition for resources among members of 2 or more different species is called intraspecific competition.
False
The number of different species in a community; a count of species.
species richness
Which of the following ecosystems would be characterized by a forest of deciduous trees in temperate conditions at mid-level altitudes.
mixed deciduous forest
Abiotic factors are living organisms in an area.
False
What effect does conventional agriculture have on biodiversity?
Biodiversity is decreased in cultivated fields.
The variety of living things.
biodiversity
Higher biodiversity correlates with higher ecosystem stability.
True
How would you expect biodiversity to compare between a cultivated grassland and an undisturbed grassland?
Biodiversity would be lower in a cultivated grassland compared to an undisturbed grassland.
The pathway in which chemicals circulate through both the abiotic and biotic components of ecosystems.
biogeochemical cycle
Consists of all the populations of organisms that live together in a particular place.
community
Which of the following is NOT a coniferous tree?
beech
Two different ecosystems are sampled, and the number of species and the abundance of each are counted. Simpson’s biodiversity index is used to analyze the data from each. Ecosystem A has a diversity index of .25, and ecosystem B has a diversity index of .85. Which has greater biodiversity?
B
Which of the following is NOT an abiotic factor?
trees
