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WorksheetsBiotic and Abiotic Factors in Ecosystems
Total questions: 30
Worksheet time: 5hrs 0mins
What is the major difference between primary and secondary succession?
secondary succession involves bare rock
primary succession involves soil to start from
Primary succession starts from bare rock
none of these are correct
Hurricanes, floods forest fires all result in destroyed ecosystems with soil that is intact. What type of succession is this?
primary succession
secondary succession
tertiary succession
quaternary succession
Which of the below is a biotic factor?
water
soil
bacteria
gasses
Which of the following is an abiotic factor?
bacteria
oak trees
soil
insects
Which situation below shows a correct interaction between an abiotic and biotic factor?
a rock at the bottom river gets carried by the current downstream
bacteria in soil breaks down decomposing animals
wind blows sand from a sand dune
waves crash against rocks at a beach
This is a lichen which is the type of species that will live on bare rocks. What are these species called?
intermediate species
unnatural species
pioneer species
exploratory species
This is the ecosystem 137 years after a devastating forest fire, what type of community is this known as?
primary community
secondary community
hostile community
climax community
The process by which a mix of species and habitats change over time.
suppression
succession
ecological succession
quaternary succession
As flowering plants, shrubs small trees and small animals move back into an environment, we call this, this type of succession.
tertiary succession
secondary succession
primary succession
none of the above
After a secondary succession event what is most likely to occur in that ecosystem?
bare rock will be exposed to lichens and moses
completely different grasses and wildflowers will grow
similar types of plants and animals will repopulate the area
the soil will not grow plants because of salinity
Drastic changes in climate, such temperatures and seasonal variation would potentially cause this?
collapse of an ecosystem
adaptation to changing temperatures and environmental variation
temperatures will cause a succession event
extinction event
Our seasons change about every 3 months, how could rising temperatures throughout the year affect the seasons
winters would be longer and summers would be shorter
seasons would be unaffected
summer would feel longer and winter would feel shorter
spring and fall would no longer exist
What is primary succession in an ecosystem?
it is when a disaster happens and the soil is left intact
it is when a disaster happens and the soil is completely gone.
it is when the first organisms settle an area
it is when nature revives itself
What is secondary succession in an ecosystem?
The environment is destroyed but the soil is left intact
The environment is destroyed but nothing is left but bare rocks
The environment revives itself twice
The environment fails to revive itself
A alligator sits on the bank of a river and it is sunbathing, what are the abiotic and biotic factors.
abiotic - alligator
biotic - sun
abiotic-river
biotic- sun
biotic- alligator
biotic-alligator
abiotic-sun
none of these is correct
What is a succession event?
This is when species in a environment are replaced by new species
This is when a natural disaster happens
This describes an extinction event
This is when new species appear in an existing environment
The relationship in which an organism hunts and kills another organism for food is called:
mutualism
commensalism
predation
parasitism
When the bird called the oxpecker lands on the rhinocerus to eat the ticks that cover its body, it is an example of what type of relationship?
mutualism
commensalism
predation
parasitism
The following is an example of commensalism.
Clown fish provide nutrients to anemone and anemone provides protection to the clown fish.
The remora fish travels throughout the ocean with the sharks.
The lion kills the giraffe for supper.
The mosquito bites the human for blood.
The following is an example of parasitism.
The clown fish gets protection from the anemone and the anemone gets nutrients from the clown fish.
The remora fish travels throughout the ocean with the sharks.
The lion kills the giraffe for supper.
The mosquito bites the human for blood.
What is an ecosystem?
All the organisms living in an area
A group of the same species living together
All of the organisms living in an area and the non-living environment around them
Which of the following is an example of symbiosis?
A mother bear taking care of her cub
A married couple who agree to split their rent and share housework duties.
A worm living in a cow's intestine.
One chimp cleaning and grooming the hair of another chimp.
Select all description/s of an ecological niche from the following options.
A fox sleeps in a burrow
A bear helps clear lichen off rocks with it's feet when fishing in a stream
A monkey swings off branches to reach fruit
Two different species of bird exist in the same air space without interacting
Birds eat seeds, then disperse them further away
Two or more species that engage in mutually beneficial interactions.
mutualists
engineers
invasives
predators
Which of the following would be the most likely effect, if there were a sudden increase in the cricket population?
There would be a decrease in the small bird population.
There would be a decrease in the grass/flowers population.
There would be a decrease in the mice population.
There would be an increase in the grass/flowers population.
Removing a species from a food web typically results in...
Increased population of their prey
Increased population of their predators
Plant overgrowth
The whole system to collapse
Animals will adapt to fill a vacant ecological niche
True
False
