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100
In any ecosystem or habitat, there are ______ and ______ factors.
a) biotic / abiotic
b) short / tall
c) hot / cold
d) adapt / evolve
a) biotic / abiotic
100
Relationships in which one organism lives inside or on another organism and harms it are called:
a) parasitism
b) mutualism
c) commensalism
d) herbivory
a) parasitism
100
Which of the following illustrates the correct ordering of trophic levels?
a) decomposers-carnivores-autotrophs-herbivores
b) herbivores-autotrophs-carnivores- decomposers
c) producers- herbivores-carnivores-decomposers
d) carnivores-producers-omnivores
c) producers-herbivores-carnivores-decomposers
100
An ecosystem is composed of all of the following except:
A) Plants
B) Animals
C) Temperature
D) Meadows
D) Meadows
100
What happens if a population grows past its carrying capacity?
The population will start to die off
200
Organize these options into the right categories Groups: (a) Biotic, (b) Abiotic
(Tree, rock, cloud, seaweed, Mountain Lion, and Dirt)
(a) - Biotic = Tree, seaweed, mountain lion
(b) - Abiotic = Rock, dirt, cloud
200
network of complex interactions formed by the feeding relationships among the various organisms in an ecosystem
A) biome
B) food web
C) community
D) predator-prey
B) food web
200
An environmental factor that prevents a population from increasing
A) biotic factor
B) growth factor
C) limiting factor
D) abiotic factor
C) limiting factor
200
This kind of relationship between species in which both benefit is known as _____?
a) predation
b) parasitism
c) commensalism
d) mutualism
d) mutualism
200
In a food web, what do the arrows represent?
a) the color of the organism
b) the direction of the energy flow
c) the size of the organism
d) the speed of the organism
b) the direction of the energy flow
300
A type of consumer that eats both plants and animals
A) insectivore
B) carnivore
C) omnivore
D) detritivore
C) omnivore
300
a group of interbreeding organisms living in the same area (all of the deer in the forest)
A) ecosystem
B) population
C) community
D) individual
B) population
300
What is a connection of food chains with many food energy paths in an ecosystem called?
a) ecosystem
b) food web
c) environment
d) population
b) food web
300
Only about 10% of usable energy is transferred from one trophic level to the next. Reason: usable energy lost as heat
A) carbon exchange in the atmosphere
B) Energy flows through Food Webs
C) water flows in biomes
D) Nutrient Cycling in Ecosystems
B) Energy flow through Food Webs
300
What is the impact of invasive species on native ecosystems?
They can disrupt local ecosystems, outcompeting native species for resources.
400
Select the correct answer from each drop-down menu.
What is the source of energy in our ecosystem?
In our ecosystem, the ________ is the source of all energy. In terms of the ecological pyramid, _____ of energy is passed from one level to next level.
a) air
b) sun
c) water
d) 10%
e) 50%
b) sun
d) 10%
400
Any relationship in which two species live closely together is called ________, which means “living together.”
a) mutualism
b) commensalism
c) symbiosis
d) predation
c) symbiosis
400
What is the difference between a food chain and a food web?
A food chain is a linear sequence of organisms through which nutrients and energy pass, while a food web is a complex network of interconnected food chains.
400
A partial food chain is represented below. 
A student observed owls hunting mice in a field. Some chemicals from the waste products of the owls were made available to be absorbed by the roots of the grasses due to the action of .
A) autotrophs
B) carnivores
C) herbivores
D) decomposers
(D)
400
True or False: Energy can be lost due to growth
True
1000
An Adirondack Mountain ecosystem is represented below.
An abiotic factor in this ecosystem is the .
A) pH of the soil where the trees grow
B) number of deer of reproductive age
C) different species of grass present
D) balance between predators and prey
(A)
1000
The chart below lists some organisms found in a New York ecosystem and their sources of energy.
Organism ///// Source of Energy
(grasses) (sunlight)
(leopard frog) ( insects, and algae)
(carp) (plants, insect larvae)
(heron). (carps, frogs, salamanders)
(turtle) (fish, plants, tadpoles, insects)
(carp)
1000
An energy pyramid for a forest ecosystem is represented below. The four levels (A-D) represent types of organisms in the ecosystem.
Which number column in the chart below contains four terms that correctly identify the most likely types of organusms that could be found at each of the four levels in the pyramid.?
(2)
1000
Remoras are small fish that swim close to or attach themselves to sharks. Remoras eat small scraps left as the sharks feed and the sharks are unaffected.
A) competition
B) predation
C) mutualism
D) commensalism
D) commensalism
1000
According to the 10% rule, which of these organisms would have the smallest population?
a) blue whale
b) killer whale
c) fish
d) squid
e)penguin
b) Killer Whale ( The 10% rule states that only 10% of energy transfers from one trophic level to the next, so top predators like the killer whale are the smallest population since they need the most energy and are at the highest level of the chain.