ECOLOGY PRACTICE QUESTIONS
WITH CORRECT ANSWERS
Ecology - CORRECT ANSWER-The study of the distribution
and abundance of organisms and their interactions with the
world and others
Population - CORRECT ANSWER-Group of individuals all of
the same SPECIES LIVING in the SAME AREA.
Community - CORRECT ANSWER-Group of populations living
in the same area.
Ecosystem - CORRECT ANSWER-This describes the
interrelationships between the organisms in a community and
the environment.
Biosphere - CORRECT ANSWER-This is composed of all the
regions on the earth that contains living things. IE soil, oceans,
lower 10 km of the atmosphere.
Habitat - CORRECT ANSWER-Place where organisms live.
Can be described through temperature, soil quality, water
salinity.
Niche - CORRECT ANSWER-Describes all the biotic (living)
and abiotic (nonliving) resources in the environment used by an
organism.
Density (of a population) - CORRECT ANSWER-The total
number of individuals per area of volume occupied. (IE 100
mice/km^2)
, Carrying Capacity - CORRECT ANSWER-Maximum number of
individuals of a population that can be sustained by a particular
habitat.
Limiting Factors - CORRECT ANSWER-Elements that prevent
a population from attaining its biotic potential.
Density-Dependent Factors - CORRECT ANSWER-[a limiting
factor] Agents whose limiting effect becomes more intense as
the population density increases (IE parasites/disease,
resources, toxic effect of waste products, and predation)
Density-Independent Factor - CORRECT ANSWER-[a limiting
factor] Occurs independently of the density of the population (IE
natural disasters, climate change)
Exponential Growth - CORRECT ANSWER-Pattern of
population growth that occurs whenever the reproductive rate is
greater than zero. (Forms a J-shaped curve when graphed)
Logistic Growth - CORRECT ANSWER-Pattern of population
growth that occurs when limiting factors restrict the size of the
population to the carrying capacity of the habitat.(Forms an S-
shaped curve [a sigmoid] when graphed.
Predation - CORRECT ANSWER-Form of community
interaction where an animal feeds on a plant or other animal
Predator - CORRECT ANSWER-Animal that kills and eats
other animals
Parasite - CORRECT ANSWER-Animal that spends most or all
of its life living on another organism, obtaining nourishment
from the host by feeding on tissues
Herbivore - CORRECT ANSWER-Animal that eats plants.
WITH CORRECT ANSWERS
Ecology - CORRECT ANSWER-The study of the distribution
and abundance of organisms and their interactions with the
world and others
Population - CORRECT ANSWER-Group of individuals all of
the same SPECIES LIVING in the SAME AREA.
Community - CORRECT ANSWER-Group of populations living
in the same area.
Ecosystem - CORRECT ANSWER-This describes the
interrelationships between the organisms in a community and
the environment.
Biosphere - CORRECT ANSWER-This is composed of all the
regions on the earth that contains living things. IE soil, oceans,
lower 10 km of the atmosphere.
Habitat - CORRECT ANSWER-Place where organisms live.
Can be described through temperature, soil quality, water
salinity.
Niche - CORRECT ANSWER-Describes all the biotic (living)
and abiotic (nonliving) resources in the environment used by an
organism.
Density (of a population) - CORRECT ANSWER-The total
number of individuals per area of volume occupied. (IE 100
mice/km^2)
, Carrying Capacity - CORRECT ANSWER-Maximum number of
individuals of a population that can be sustained by a particular
habitat.
Limiting Factors - CORRECT ANSWER-Elements that prevent
a population from attaining its biotic potential.
Density-Dependent Factors - CORRECT ANSWER-[a limiting
factor] Agents whose limiting effect becomes more intense as
the population density increases (IE parasites/disease,
resources, toxic effect of waste products, and predation)
Density-Independent Factor - CORRECT ANSWER-[a limiting
factor] Occurs independently of the density of the population (IE
natural disasters, climate change)
Exponential Growth - CORRECT ANSWER-Pattern of
population growth that occurs whenever the reproductive rate is
greater than zero. (Forms a J-shaped curve when graphed)
Logistic Growth - CORRECT ANSWER-Pattern of population
growth that occurs when limiting factors restrict the size of the
population to the carrying capacity of the habitat.(Forms an S-
shaped curve [a sigmoid] when graphed.
Predation - CORRECT ANSWER-Form of community
interaction where an animal feeds on a plant or other animal
Predator - CORRECT ANSWER-Animal that kills and eats
other animals
Parasite - CORRECT ANSWER-Animal that spends most or all
of its life living on another organism, obtaining nourishment
from the host by feeding on tissues
Herbivore - CORRECT ANSWER-Animal that eats plants.
