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WorksheetsEcology Part 2 Review
Total questions: 47
Worksheet time: 45mins
What is population growth?
Decrease in the number of individuals in a population over time.
The average age of individuals in a population.
The movement of individuals from one population to another.
Increase in the number of individuals in a population over time.
Define carrying capacity.
The minimum number of individuals an environment can support sustainably.
The average number of individuals an environment can support sustainably.
The maximum number of individuals an environment can support unsustainably.
Maximum number of individuals an environment can support sustainably.
What are density-dependent factors?
Factors that affect a population based on its size.
Factors that affect a population based on its location.
Factors that affect a population based on its density.
Factors that affect a population based on its age.
Give an example of a density-independent factor.
Climate change.
Natural disasters
Predation.
Competition for resources.
What is competition in population ecology?
Interaction between individuals or species for unlimited space.
Cooperation between individuals or species for limited resources.
Interaction between individuals or species for limited resources.
Interaction between individuals or species for unlimited resources.
What are the two types of population growth?
linear growth and geometric growth
arithmetic growth and geometric growth
exponential decay and logistic decay
exponential growth and logistic growth
How does carrying capacity affect population growth?
Carrying capacity limits population growth by causing a decrease in birth rates and an increase in death rates when resources become scarce.
Carrying capacity only affects death rates, not birth rates.
Carrying capacity increases population growth by providing more resources.
Carrying capacity has no effect on population growth.
Name three density-dependent factors.
Genetic mutations, natural disasters, and human activities.
Climate change, pollution, and habitat destruction.
Migration, birth rate, and death rate.
Competition for resources, predation, and disease
What are the effects of density-independent factors on population growth?
Density-independent factors only affect population growth in low-density populations.
Density-independent factors affect population growth regardless of population density.
Density-independent factors have a greater impact on population growth in dense populations.
Density-independent factors have no effect on population growth.
Which statement is an example of how carbon moves through a food chain as part of the cycle?
Producers release carbon dioxide, and consumers take it it.
Producers take in carbon dioxide, and consumers release it.
Producers take in carbon from the soil, and they release it when they decompose.
Producers release carbon into the soil, and consumers take it in from the soil.
What type of organism receives carbon present in dead plants and animals?
producer
primary consumer
secondary consumer
decomposer
When organisms die, what process returns their carbon back into the atmosphere?
Respiration
Decomposition
Combustion
Erosion
TRUE or FALSE? Invasive species grow quickly due to the lack of predators. This leads to a decline or extinction of the native population.
True
False
The primary cause of the introduction of invasive species introduction is ---
too much food.
human action.
weather events.
asteroids.
A species form that supports the balance in the entire ecosystem.
Keystone Species
Herbivores
Umbrella Species
Predators
Biodiversity, refers to
the same species in a general location
the number of different species in a given area
the number of animal species in a given area
the number of plant species in a given area
When removed from its natural habitat, an invasive species:
Struggles to find food
Cannot adapt to the climate
Thrives and causes harm
Enhances its new environment
An organism that gets energy from eating other organisms is a ______
producer
consumer
decomposer
prey
Is the Sun abiotic or biotic?
abiotic
biotic
An animal that hunts, kills, and eats other animals is called a _______.
a producer
an herbiovre
a predator
an abiotic factor
The climate in the tropical rainforest is normally 90°F . Because of climate change, the temperature drops down to 75°F . This change causes most of the fruit-bearing plants to die off. In this case, the temperature is a
limiting factor
carrying capacity
Hummingbirds feed on nectar from flowers. In return, the flowers are pollinated by the hummingbirds. Which type of symbiosis is this?
mutualism
parasitism
commensalism
Mistletoe extracts water and nutrients from a spruce tree. The spruce tree is harmed. Which type of symbiosis is this?
mutualism
parasitism
commensalism
Skunks often live in burrows that have been made and abandoned by woodchucks. Which type of symbiosis is this?
mutualism
parasitism
commensalism
What is an organisms role within an ecosystem?
habitat
job
population
niche
