WorksheetsEnvironmental Science: Understanding Populations
Total questions: 40
Worksheet time: 26mins
In which type of interaction between species does ONE species BENEFIT by HARMING ANOTHER species but not killing it?
predation
parasitism
mutualism
commensalism
A species of plant has exponential growth after it is introduced into an area where it has never lived. Which statement BEST DESCRIBES EXPONENTIAL GROWTH?
Each individual plant grows much larger than usual.
The population immediately decreases.
Within a few years, the population increases dramatically.
The species’ reproductive potential declines.
A bird that feeds at NIGHT and a bird that feeds during the DAY from the same flower is an example of
direct competition
mutualism
indirect competition
indirect commensalism
The relationship between a clownfish (+) and a sea anemone (+) is an example of
parasite and host.
predator and prey
competition.
mutualism.
The relationship between a great white shark and a seal is an example of
parasite and host.
predation
competition.
mutualism
Which of the following is NOT an example of a parasite
a tapeworm in a human’s intestine.
a flea on a dog
a cow in a grassland.
mistletoe on a tree.
Which of the following species has the highest reproductive potential?
The number of wild horses per square kilometer (in an area) in a prairie is the horse population’s
density.
dispersion.
size.
birth rate.
A set of individuals within a species living in the same place at the same time.
The arrangement of a population's individuals in space
The percentage of change in the size of a population over a given period of time.
The maximum number of offspring that each member of the population can produce.
The population size where birth rates and death rates are equal.
A kangaroo’s role as a large herbivore on Australian grasslands is it’s __________.
habitat
niche
job
population control
Which of the following is not an example of exponential growth?
A.reindeer of the Probilof Islands after eating most of the Lichens
A.rabbit populations after being introduced to Australia
A.a bank account that earns interest
A.mold appearing on bread overnight
Many bluebirds eating at the same bird feeder is what type of interaction?
Mutualism
Predication
Competition
Symbiotic
Which of the following expressions is used to calculate the change in population size?
births plus deaths
births plus deaths plus population
births minus deaths
births minus deaths plus population
An orchid using a high tree branch as a place of attachment to receive more sunlight but not affecting the tree is what type of interaction?
commensalism
predation
parasitism
mutualism
Competition for food cannot occur
between two populations
among members of the same population
among populations whose niches overlap
between animals from two different ecosystems
In which type of interaction between species does one species benefit by harming another species but not killing it?
predation
parasitism
mutualism
commensalism
Dispersion describes;
The arrangement of its individuals
The spreading of organisms
The treatment of organisms
A graph
The % change in the size of a population over a a given period of time is that population's _________.
Exponential Rate
Divisional Rate
Growth Rate
Birth Rate
One organism eats the other, this is called
Predation
Competition
Parasitism
Symbiosis
Ants and acacia trees have a mutualistic relationship because;
They are both adapted to humid climate.
They are part of the same ecosystem.
They benefit each other.
The ants eat parts of the acacia tree.
Which of the following describes a species’ niche?
the unique role the species plays in an ecosystem
the physical location where the species can be found on Earth
the adaptation of a species population to its physical environment
the maximum number of offspring all members of that species can produce
Which of the following examples would be least likely to be considered a symbiotic interaction?
A wren builds a nest in a cactus
A yucca moth pollinates and lays eggs on yucca flowers
A kit fox hunts and feeds on a kangaroo rat.
Bacteria in a fox’s digestive system help it digest food
The arrangement of a population's individuals in space
All the black squirrels living in a forest is an example of a?
population
habitat
