NEW
Font size
WorksheetsEcology Test Review
Total questions: 31
Worksheet time: 16mins
Which of the following are considered biotic factors of an environment?
temperature
rock
animal carcass
cloud
Which of the following are considered abiotic factors of an environment?
animal carcass
egg
plant
cloud
Associate the following statements with the level of Biological organization they fall under: The light, sun, soil, air and living organisms within the Rainforest.
organism
population
community
ecosystem
Associate the following statements with the level of Biological organization they fall under: The number of residents in Fort Worth
organism
population
community
ecosystem
Associate the following statements with the level of Biological organization they fall under: All the living organisms in the Trinity River
organism
population
community
ecosystem
Associate the following statements with the level of Biological organization they fall under: A leopard gecko
organism
population
community
ecosystem
Which of the following statements is false?
Tissues exist within organs which exist within organ systems.
Communities exist within populations which exist within ecosystems.
Organelles exist within cells which exist within tissues.
Communities exist within ecosystems which exist in the biosphere.
Which region would likely have the greatest amount of biodiversity?
A cave region with one ecosystem, which supports small populations of many different species.
A grassland region with one ecosystem, which supports very large populations of a few different species.
A mountainous region with two ecosystems, each of which supports a few different species.
A coastal region with three ecosystems, each of which supports many different species.
Corals, and the zooxanthellae algae they contain, form the base of a coral reef ecosystem. Organisms like sea urchins feed on microorganisms that grow on the corals. Organisms including seahorses feed on plankton and fish that also inhabit the reef. Larger animals like sea turtles frequently enter the reef to forage. Seaweeds, which are competitors of corals, may grow along the reef bottom.
The biodiversity in a coral reef ecosystem can be changed by both natural and human activities. What is a natural factor that would have the greatest negative impact on the ecosystem's biodiversity?
A sudden increase in the harvesting of corals, which decreases the coral population in the reef.
A decrease in the level of inbreeding in several seahorse populations in the reef.
The immigration of several new populations of sea urchins into the reef.
The overgrowth of a population of seaweed, which prevents light from reaching the reef.
Wheat crops are grown in a field. The seeds are genetically identical. Which of the following is the most likely effect of planting an entire field with these seeds?
The population will have high biodiversity.
The population will have high genetic variation.
The population will be resilient to environmental changes.
The population will be limited in how it adapts to changes.
A sea otter's preferred meal is sea urchins. Without the otters, the urchin population would increase and overgraze on kelp forests. When sea urchins no longer have a predator, an over consumption of kelp takes place and other species are harmed. Otters are a species that influences the survival of many other species in an ecosystem. What type of species are otters?
predators
prey
keystone
endangered
When there are no individuals of a certain species left anywhere on Earth, they are considered
endangered
extinct
threatened
keystone
Any thing or organism that regulates the size of a population is known as
carrying capacity
biodiversity
a limiting factor
a food web
A disease results in the death of one third of a dense population of bats. It spreads easily between the bats because there are so many of them. The disease is an example of:
a density-dependent limiting factor
exponential growth
a density-independent limiting factor
a nutrient-limiting factor
For the graph below, what is the carrying capacity of Species 5?
2000 organisms
2500 organisms
Day 23
Day 15
1500 organisms
Which of the following would be a density independent limiting factor for the bunny population in California?
amount of sunlight available
amount of plants available
a large wildfire
appearance of a new virus like SARS-CoV-2 that affects deer
When a population grows past the ecosystem's carrying capacity, what happens to the population?
the population continues to grow
the population starts to die off to return to carrying capacity
the population will go extinct due to lack of resources
the population grows then finds a new carrying capacity
What benefits does society get from biodiversity?
All of the answers are correct
Clean freshwater
Ecosystem stability
Materials to produce medicines
The greenhouse effect is a natural and important process that keeps the Earth’s surface warm enough to support life.
true
false
The Atlantic Salmon is a highly desirable and very tasty fish. After the commercial fishing industry was established, their numbers dropped from 4 million to 700,000 between 1979 and 1990. What is this an example of?
Over-harvesting
Excessive logging
Habitat destruction
Habitat fragmentation
How can habitat fragmentation due to land development disrupt an ecosystem?
Too many new habitats are created.
The habitat cannot support as large or diverse a population.
Species are driven to extinction due to hunting.
New species are introduced that displace existing species.
Which of the answers below are not considered disturbances that would start a new succession.
fire
flood
rain
hurricane force winds
volcanoes
Primary and secondary succession are different because secondary succession has what at the start?
soil
rocks
plants
animals
Which of the answers below that are considered pioneer species for a primary succession.
flowers
lichen
grasses
trees
Select ALL of the answers below that are considered pioneer species for a secondary succession.
bushes
lichen
grasses
trees
Is the image an example of primary or secondary succession?
primary
secondary
Two students set up a terrestrial ecobottle chamber. It contains one small worm, rotting leaves and damp dirt. Below this, their partners set up an aquatic chamber. It contains rocks and a snail. The worm and snail end up dying the next day because:
space was a limiting factor
food was a limiting factor
oxygen was a limiting factor
sunlight was a limiting factor
During respiration, _____ is consumed and _____ is released.
oxygen, nitrogen
oxygen, carbon dioxide
carbon dioxide, oxygen
nitrogen, carbon dioxide
Which does not produce CO2?
Photosynthesis
Decomposition
Respiration
Burning Fossil Fuels
All the carbon that exists is continually recycled in the carbon cycle.
true
false
All living things contain carbon.
true
false
