WorksheetsEcology test
Total questions: 67
Worksheet time: 1hrs 7mins
The number of pythons found throughout Everglades National Park has increased in recent years. These huge snakes are not native to Florida and are believed to have been released into the wild by pet owners. Wildlife biologists have initiated attempts to capture and remove these pythons. Which statement best explains the biologists’ reason for removing these pythons from the Everglades?
The pythons could upset the territorial boundaries of native organisms.
The pythons could adapt to overcome diseases common to native snakes.
The pythons could prey on native organisms and cause native populations to decline.
The pythons could begin to interbreed with native snakes and produce a more successful species.
In the wild, some alligators gets their teeth cleaned by birds. The birds gets their food from the alligators' teeth.
What type of symbiosis is this?
Mutualism
Commensalism
Parasitism
Neutralism
In an ecosystem, there are populations of moose, rabbits, grass, and pine trees. Suddenly, a fire blazes through the area, which kills all of the populations. As the months go on, new species of grass begin to take root. This attracts animals, and eventually the ecosystem is restored.
What type of ecological succession happened?
Primary succession
Secondary succession
Tertiary succession
None of the above
In this photo, what is an abiotic factor?
Deer
Grass
rain
What is this picture describing?
It is describing natural selection.
It is describing direct competition between flamingos and ducks.
It is describing abiotic factors of the tundra.
It is describing the niche of each bird.
What would happen within a few months after the formation of a volcanic island?
pioneer species would grow
no pioneer species would grow
trees and large plants would grow
rich, organic soil would be present
What would be a good example of a primary consumer?
carnivore
detrivore
decomposer
herbivore
Which organisms would be at the top or last trophic level?
plant
herbivore
omnivore
carnivore
The monkey would be a
decomposer
producer
primary consumer
secondary consumer
Introduced species disrupt ecosystems because they are a/an
Keystone Species
Endemic Species
Invasive Species
Native Species
A lion that eats a zebra that eats grass is a
primary consumer
secondary consumer
tertiary consumer
quaternary consumer
90% of the energy that gets lost as you move up a food pyramid or chain gets lost as
pollution to the environment
heat to the environment
energy for decomposers
gets recycled
What type of factor has an increasing impact as the population size increases?
density-independent
density-dependent
cohort effect
survivorship factor
What type of growth model is shown in image A?
Exponential
Logistic
What point on the graph represents carrying capacity?
a
b
c
d
The Florida Panther is a large cat that is native to the southern parts of Florida. Recently, the panther's main food source, rabbits, have been infected with a deadly disease that only affects rabbits. How would this most likely affect the population of panthers in the coming years?
The panther population will decrease since they won't have access to as much food
The panther population will not be affected because they will adapt to eating other food
The panther population will increase because they will produce more offspring to make up the difference
The panther population will decrease because they will contract the disease.
Sea turtles are marine reptiles. They rely on an external heat source, which makes them ectotherms. They are commonly found in waters off the Mid-Atlantic and Northeast United States during the summer and early fall. Typically, they begin to migrate south to warmer water by late October. However, some sea turtles strand along our shores when water temperatures drop rapidly or unexpectedly. This is called “cold stunning.” Cold stunning is similar to hypothermia in humans. Initial symptoms include a decreased heart rate, decreased circulation, and lethargy, followed by shock, pneumonia and possibly death.
Based from this passage, why do sea turtles migrate?
Sea turtles migrate because their food source is more abundant in the south during the fall.
Sea turtles migrate because predators become more abundant in the Mid-Atlantic and Northeast of the U.S. during the summer and early fall.
Sea turtles migrate because humans are fishing more often in the areas where they are commonly found during summer and fall.
Sea turtles migrate because they depend on external sources of heat to help maintain their body temperature.
The average number of individuals of the same species per unit of surface area at a given time is the ……………………
population density
population growth
population birth rate
population size
Exponential population growth can be described as
growth when resources are limited
a j-shaped curve
a s-shaped curve
growth that reaches carrying capacity
Logistic population growth can be described as
growth when resources are limited
a s-shaped curve
reaching carrying capacity
all of the above
What limits Population Growth?
birth rates increasing
resources being used up
natural selection taking place
none of the above
