WorksheetsOrganisms, Ecosystem and Diversity TEST
Total questions: 50
Worksheet time: 1hrs 22mins
Air is a mixture of colorless gases. The air that makes up the Earth's atmosphere consists primarily of nitrogen and oxygen. Air is an example of which type of factor?
Biotic
Abiotic
What is the difference between the biotic and abiotic factors?
Biotic factors are living things and abiotic factors are nonliving things.
Biotic factors are nonliving things and abiotic factors are living things.
In many desert ecosystems, days are hot and nights are cold. Water is scarce, so animals seek water wherever possible. The spines of a cactus are actually leaves adapted to conserve water. The cactus plants have also adapted to live in thin, sandy soil. Which of the following is a biotic component of a desert ecosystem?
the thin, sandy soil
the wide temperature range
the scarcity of water
the spiny cactus leaves
Which of the following is a biotic factor in an ocean ecosystem?
the salt content of the water
the temperature of the water
the fish in the water
the oxygen in the water
What is a example of a abiotic factor?
Panda
Bacteria
Butterfly
Weather
What is composed of several food chains in an ecosystem that intersect and depend on one another?
niche
feeding level
energy pyramid
food web
What is the ultimate source of energy in any food chain?
the sun
producers
consumers
decomposers
Which organisms can be found at the first, or lowest, trophic level?
herbivores
carnivores
heterotrophs
autotrophs
Which statement describes an autotroph?
It is an organism that makes its own food.
It is an organism that eats other organisms.
It is an organism that eats decaying matter.
None of the above.
All are considered to be abiotic factors EXCEPT
moisture
air currents
predators
temperature
Which of these phrases describes the biotic factors of an ecosystem?
the number of individual organisms in each trophic level of an ecosystem
any living part of an environment
an organism that eats only meat
A ________ is all of the different populations living together in a specific location.
Population
Community
Organism
Carrying Capacity
A species' _______ is the number of that species in a specific location.
Migration
Population
Limiting Factor
Carrying Capacity
Something that has an effect on the number of organisms that can live in an area would be called a _________.
Population
Adaption
Limiting Factor
Natural Selection
All the living and non-living things interacting in an area is a(n) _________.
Niche
Ecosystem
Habitat
Community
________ is the movement of a species from one area to another.
Migration
Population
Death Rate
Adaption
_________ is the struggle between organisms for the same limited resources.
Carrying Capacity
Competition
Natural Selection
Death Rate
Which answer contains 2 biotic factors in an ecosystem
bacteria & fungi
temperature & animals
water & plants
sunlight & air
Which type of succession happens when a new island is formed by a volcano erupting?
primary succession
secondary succession
secretes/releases acid that breaks the rock down into dirt/soil
Primary Succession
Lichen
Hardwood trees
Rock
What is the correct order?
lichen, moss, grasses, shrubs, trees
lichen, shrubs, moss, grasses, trees
lichen, trees, flowers, moss, shrubs
Shrubs, trees, lichen, moss, flowers
In this energy pyramid, which organisms have the most energy available?
Producers
Carnivores
Herbivores
Top Predator
Several owls live in a forest. The owls prey on mice. Hawks also prey on mice. Which might happen if several hawks move to the forest where the owls live?
The number of owls will increase, and the number of hawks will decrease.
The number of mice will increase, and the number of owls will decrease.
The number of owls and hawks will increase.
The number of owls and mice will decrease.
Who is the herbivore?
leaf
catepillar
chamelon
snake
mongoose
Organisms that get their nutrition from other living things (consumers)
Heterotroph
Autotroph
Carnivore
Abiotic
What is an ecological disturbance?
A temporary change in environmental conditions that causes a pronounced change in an ecosystem.
A random event that has no impact on an ecosystem.
A gradual change in environmental conditions that causes a pronounced change in an ecosystem.
A permanent change in environmental conditions that causes a pronounced change in an ecosystem.
What are the effects of ecological disturbances on biodiversity?
Ecological disturbances have no effect on biodiversity.
Ecological disturbances can have both positive and negative effects on biodiversity.
Ecological disturbances only have negative effects on biodiversity.
Ecological disturbances only have positive effects on biodiversity.
What are some examples of human-induced ecological disturbances?
Overpopulation, deforestation, water pollution, industrialization
Wildfires, natural disasters, genetic modification, air pollution
Urbanization, desertification, invasive species, soil erosion
Deforestation, pollution, habitat destruction, overfishing, climate change
_______________ are the first organisms to live in an uninhabited area.
Climax Community
Pioneer Species
Organisms
Which of the following is NOT a source of pollution in the ocean?
Fertilizers used on land.
Sand drifting along the bottom of the ocean floor.
Oils found on city streets.
Emissions from gas-burning vehicles.
What is one way humans are trying to positively impact the ocean?
Fishing
Drilling for oil and natural gas
Creating artificial reefs
Transporting goods in ocean vessels
Which process is responsible for carrying fertilizers that have been applied to crops into bodies of water, such as a river?
Runoff
Evaporation
Ocean Currents
Tectonic Plate Movement
Coral reefs are endangered by
climate change
overfishing
pollution
all of the above
How do the oceans contribute to the amount of Oxygen in the Earth's atmosphere?
Fish in the ocean produce oxygen.
Phytoplankton in the ocean produce oxygen through the process of respiration.
Phytoplankton in the ocean produce oxygen through the process of phtosynthesis.
There is no oxygen production in the ocean.
Which is NOT an example of how humans depend on ocean systems?
Climate regulation
Source for natural resources
Excess carbon dioxide production
Transportation
Unrestricted coastal development, pollution, and destructive fishing are some of the human activities that deplete ocean marine life. Which human activity is NOT beneficial to conservation of the ocean system?
Reduction of plastic consumption
Proper disposal of chemicals
Release of wastewater
Artificial reef programs
Is the following an example of a positive or negative impact on the earth's ocean systems?
Warmer global temperatures have caused glaciers to melt resulting in higher ocean levels which displace humans and destroy wetlands.
Positive Human Impact on Ocean Systems
Negative Human Impacts on Ocean Systems
