WorksheetsEcology Unit Adaptive Practice Test
Total questions: 60
Worksheet time: 44mins
What type of relationship does a mosquito have with a human?
Commensalism
Mutualism
Parasitism
Predation
Competitive
An abiotic factor is a ___________________ factor in an organism's environment.
nonliving
living
A biotic factor is a (a) factor in an organism's environment.
A deer would be ________________ factor in its ecosystem.
an abiotic
a biotic
Water would be ________________ factor in an ecosystem.
an abiotic
a biotic
The sun is a(n) ____________________ factor
biotic
abiotic
If you were studying an African environment, and you saw a herd of elephants, what level of the biosphere are you observing?
community
organism
ecosystem
population
If you were swimming in a lake and saw fish, water plants, and frogs, you would be looking at what?
population
ecosystem
organism
community
If we were in the desert, and we studied the sand, rocks, lizards, cactus, and the snakes, we would be studying the entire desert _____________________________.
community
ecosystem
population
organism
The relationship between two members of a community in which one member harms another by its presence is
parasitism
mutualism
commensailism
dependency
A bee goes from flower to flower, gathering nectar. At each stop, the furry body and legs accumulate pollen from the flower, which the bee transfers as it moves. The flower needs pollen to reproduce and the bee needs nectar to eat. What kind of relationship is this?
parasitism
commensalism
mutualism
predation
Tapeworms are long, flat parasites that can live in the intestines of animals, including humans. The tapeworm feeds off the food the host animal consumes, and the host animal loses nutrition as a result. What kind of relationship is this?
parasitism
commensalism
mutualism
predation
Which of the following is NOT true regarding predation?
Predation helps maintain an ecological balance
Predators keep the numbers of prey animals under control
Predators choose the sick and weak prey because they are easier to catch
Predators choose the sick and weak prey because they are trying to maintain ecological balance
Some small fish attach themselves to the body of a shark without harming it and feed upon its left over food. This relationship between the shark and the fish is an example of
commensalism
mutualism
competition
parasitism
The graph shows the changes in two populations of herbivores in grassy field. A possible reason for these changes is that
all of the plant populations in this habitat decreased
population B competed more successfully for food than population A did
population A produced more offspring than population B did
population A consumed the members of population B
Which example shows a relationship between a living things and a nonliving thing?
An insect is food for a salmon
Water carries a rock downstream
A tree removes a gas from the air
A flower makes food for a butterfly
A symbiotic relationship means
the energy cycle is not involved
no one benefits
the solar system is involved
one or both parties benefit
Rabbits introduced into Australia over 100 years ago have become a serious pest to farmers. Rabbit populations increased so much that they displaced many native species of plant eaters. What is the MOST logical explanation for their increased numbers?
Rabbits have a high death rate
There are few effective predators
Additional rabbit species have been introduced
There is an increase in rabbit competitors
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
An organism's place in the biotic environment and its role in an ecosystem is
Niche
Epitope
Habitat
Habit
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
Mice might grow in population and destroy the community by eating all of the berry bushes if
wolves and snakes were removed from the food web
another predator migrated in to the community
the snake population grew
none of these
These organisms are often not shown in a food chain, but are important for recycling nutrients
producers
decomposers
primary consumers
carnivores
Which event would not cause secondary succession?
forest fire
flooding of a valley
volcanic lava flow
tornado
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 percentage of energy is passed on to the next trophic level?
5%
10%
50%
90%
At what population was carrying capacity met?
250
1000
400
720
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
Density-independent limiting factors to population growth includes
stress from overcrowding
parasitism
competition
natural disasters
What could cause exponential growth in population in a community?
people lifting heavy stuff
a community leaving
someone spreading a plague
people moving to the community/unlimited resources
Causes of death in a population may be-
density dependent & density independent
dispersion independent
density independent
independent density
Which of the following describes a population?
The total number of people, animals, and plants in New York City
The total number of houses in Atlanta
The total number of people living in the state of Texas
The total number of fish in all the world's oceans
Which of the following is a true statement about deforestation?
Once trees are cut down, they can never grow back again
Trees provide humans with the carbon dioxide we need to breathe
Animals lose their habitats when too many trees are cut down
Wood and paper products cannot be recycled
Which of the following would be a good step to take to reduce the waste you produce?
Ask your parents to buy you your own car
Try to reduce your consumption of electricity and fuel
Use only electric appliances in your home
Only buy products with vacuum-sealed plastic packaging
How can population growth lead to more pollution?
Too many people breathing causes too much carbon dioxide to enter the atmosphere
The body heat generated by billions of people leads to an increase in global warming
More people being born means more paper is needed to print birth certificates
All people produce waste, so more people equals more waste
Before 1800, the infant mortality rate was much higher than it is now. What does that mean?
People didn't have a lot of babies before 1800
Children did not grow very tall before 1800
Most women were unable to have babies before 1800
A lot more babies died during childhood before 1800
