Symbiosis
Which term describes a relationship where both species benefit?
A. parasitism
B. commensalism
C. mutualism
D. predation
C. mutualism
Why is biodiversity important?
A. it provides stability and resilience to ecosystems
B. it decreases food sources
C. it increases disease only
D. it eliminates competition
A. it provides stability and resilience to ecosystems
What is the main product of photosynthesis that plants use for energy?
A. glucose
B. oxygen
C. carbon dioxide
D. water
A. glucose
Producers in a food web get energy from:
A. minerals
B. sunlight
C. decomposers
D. minerals
B. sunlight
BOMB
Competition occurs when organisms:
A. cooperate with each other
B. live in isolation
C. avoid each other
D. struggles for the same resources
D. struggles for the same resources
Pollinators visiting flowers for nectar while spreading pollen is:
A. parasitism
B. mutualism
C. commensalism
D. naturalism
B. mutualism
SWAP
An invasive species can harm biodiversity by:
A. increasing genetic diversity
B. providing new habitats
C. recycling matter
D. outcompeting native species
What gas do plants release during photosynthesis?
A. carbon dioxide
B. nitrogen
C. oxygen
D. methane
C. oxygen
POISON
Which organisms recycle matter back into the ecosystem?
A. producers
B. carnivores
C. omnivores
D. decomposers
D. decomposers
STEAL
What adaptation helps reduce competition?
A. relying on one resource
B. hunting at night vs. day
C. using identical habitats
D. relying on one resource
B. hunting at night vs. day
A tick feeding on a dog's blood is:
A. mutualism
B. neutralism
C. commensalism
D. parasitism
D. parasitism
Which of the following is a direct threat to biodiversity?
A. habitat destruction
B. sustainable farming
C. national parks
D. recycling
A. habitat destruction
SWAP
The relationship between photosynthesis and respiration is:
A. products of one are inputs for the other
B. they are the same process
C. both make oxygen
D. neither makes energy
A. products of one are inputs for the other
SWAP
In a food chain, energy moves from:
a. consumers to producers
B. producers to consumers
C. decomposers to sunlight
D. carnivores to plants
B. producers to consumers
BOMB
When resources are scarce, populations may:
A. decline
B. increase
C. stay constant
D. never change
A. decline
POISON
Remoras eating scraps from sharks without harming them is:
A. mutualism
B. commensalism
C. parasitism
D. neutralism
B. commensalism
POISON
Which human activity increases biodiversity?
A. clear cutting forests
B. overfishing
C. reforestation
D. urban sprawl
C. reforestation
What is the primary purpose of cellular respiration?
A. to make ATP energy
B. to make chlorophyll
C. To absorb sunlight
D. to produce glucose
A. to make ATP energy
Which level has the most available energy in a pyramid?
A. producers
B. primary consumers
C. secondary consumers
D. tertiary consumers
A. producers
BOMB
Competition in ecosystems is important because:
A. it eliminates all biodiversity
B. it stops evolution
C. it influences population size and survival
D. it prevents natural selection
C. it influences population size and survival
Symbiosis means:
A. two species living closely together
B. two species competing
C. one species migrating
D. one species going extinct
A. two species living closely together
POISON
A keystone species is important because:
A. its removal affects many other species
B. it has no impact on the ecosystem
C. it is always the largest predator
D. it is always endangered
A. its removal affects many other species
BOMB
Humans and animals rely on plants because plants:
A. use up water
B. absorb oxygen
C. produce nitrogen gas
D. provide oxygen and food
D. provide oxygen and food
Matters cycles in ecosystems because:
A. energy is recycled
B. new matter is created
C. atoms are reused and recycled
D. producers make new atoms
Coral reefs are important because:
A. they provide a habitat for many species
B. they are all non-living structures
C. they stop climate change
D. they have no effect on biodiversity
A. they provide a habitat for many species
STEAL