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WorksheetsEcology Review
Total questions: 24
Worksheet time: 18mins
Tracks organisms that tend to live long lives (low death rate and high survivorship rate); toward the end of their life expectancies, however, there is a dramatic increase in the death rate.
Type I
Type II
Type III
Type IV
Describes organisms with a high death rate (or low survivorship rate) immediately following birth. Examples include bacteria, fishes, and invertebrates.
Type I
Type II
Type III
Type IV
These organisms typically live in unstable, unpredictable environments & are able to reproduce rapidly (exponentially). They do not take care of their young & are subject to predation.
k-strategist
r-strategist
m-strategist
s-strategist
These organisms occupy stable environments, are larger in size and have longer life expectancies. They produce, during their life spans, fewer offspring, but place a greater investment in each.
k-strategist
r-strategist
m-strategist
s-strategist
Click density dependent factor(s).
competition for resources
predator-prey relationships
parasitism and disease
weather
Click density independent factor(s).
competition for resources
predator-prey relationships
parasitism and disease
weather, natural disaster and man made disturbances
Which of these is NOT an example of interspecific competition?
Oysters and barnacles competing for settling space on the rocky shore
Goats and sheep in the same paddock competing for grass
Ferns and kawakawa competing for shaded locations in a forest
Stags competing for mates
Which of these are conditions required for two species to compete? (select all that are correct):
Live in the same habitat
Use the same resources
Active at the same time of day
Have different niches
Which of these best describes interspecific competition?
One species benefits while another species is harmed
One species benefits while another species is killed
One species is harmed and the other species is harmed too
One species benefits while nothing happens to the other species
What happens to two competing species that have exactly the same niche?
Both of them will move into their realised niches to avoid competition
One of them will move into its realised niche to avoid competing and the other better competitor will take up its fundamental niche
One of them will go extinct in the local area and the other one will take over the niche
Which of these best describes contest competition?
One species wins the competition and the other species loses (it goes extinct in the local habitat).
One species wins the competition and the other species is forced into a smaller realised niche.
Both species lose and go extinct
The largest number of individuals of a population that the environment can support is the...
carrying capacity
population crash
lag phase
mutualism
When a population grows past the ecosystem's carrying capacity, what happens to the population?
The population continues to grow
The population will go extinct due to limited resources
The population starts to die off to return to carrying capacity
The population grows, then finds a new carrying capacity
Food, water, sunlight, shelter, and space are that keep populations from growing exponentially are called...
food chains
ecosystems
communities
limiting factors
What point on the graph represents the carrying capacity?
A
B
C
D
Which of the following are density independent factor(s)?
competition for resources
predator-prey relationships
parasitism and disease
weather, natural disaster and man made disturbances
Which curve best describes an organism that invests a lot of energy in parenting?
Describes organisms with a high death rate (or low survivorship rate) immediately following birth. Examples include bacteria, fishes, and invertebrates.
Type I
Type II
Type III
Type IV
What term is used to define anything that regulates the size of a population?
density
a limiting factor
carrying capacity
biodiversity
