Level 1
Which of the following is NOT a land biome?
a) Desert
b) Ocean
c) Grassland
d) Tundra
✅ b) Ocean
What would most likely happen if an invasive species entered a highly biodiverse ecosystem?
a) The species would quickly go extinct
b) The ecosystem might resist or absorb the species better
c) Biodiversity would increase immediately
d) Predators would avoid it
✅ b) The ecosystem might resist or absorb the species better
What is one reason biodiversity is higher in tropical rain forests than in tundras?
a) The tundra has richer soil
b) The rainforest has a warmer climate and more rainfall
c) The rainforest has fewer organisms
d) The tundra has more sunlight
✅ b) The rainforest has a warmer climate and more rainfall
A schoolyard garden provides homes for worms, ants, and birds. This is an example of:
a) A microhabitat
b) A tundra
c) A biome
d) A food chain
✅ a) A microhabitat
What is a likely consequence of building cities in natural biomes?
a) Habitat loss and reduced biodiversity
b) Increased ecosystem health
c) More rainfall
d) Faster plant growth
✅ a) Habitat loss and reduced biodiversity
What factor most influences the types of plants and animals in a biome?
a) Soil color
b) Climate
c) Predator population
d) Air pressure
✅ b) Climate
Which biome supports organisms adapted to freezing temperatures and permafrost?
a) Grassland
b) Rainforest
c) Desert
d) Tundra
✅ d) Tundra
How does high biodiversity contribute to sustainability in an ecosystem?
a) It reduces the number of food chains
b) It increases the system’s ability to survive disturbances
c) It weakens predator-prey relationships
d) It limits plant growth
✅ b) It increases the system’s ability to survive disturbances
What would most likely happen to an ecosystem if all plant life disappeared?
a) Consumers would eventually die out
b) Predators would increase
c) Biodiversity would improve
d) Soil would become richer
✅ a) Consumers would eventually die out
Which biome has deep, rich soil and is often converted into farmland?
a) Rainforest
b) Grassland
c) Tundra
d) Taiga
✅ b) Grassland
Which biome is characterized by hot days, cold nights, and little rainfall?
a) Desert
b) Tundra
c) Rainforest
d) Taiga
✅ a) Desert
Which of these is a result of low biodiversity in an ecosystem?
a) Increased food sources
b) Increased vulnerability to disease and change
c) Greater sustainability
d) More stable food webs
✅ b) Increased vulnerability to disease and change
What is one way human activity negatively affects grassland biodiversity?
a) Planting native grasses
b) Over-farming and development
c) Protecting wildlife
d) Rotating crops
✅ b) Over-farming and development
Which biome has trees that stay green year-round and cold winters?
a) Desert
b) Taiga
c) Grassland
d) Temperate forest
✅ b) Taiga
In a forest ecosystem, what role do decomposers play?
a) Capture sunlight
b) Break down dead organisms and recycle nutrients
c) Hunt prey
d) Eat plants
✅ b) Break down dead organisms and recycle nutrients
In a grassland biome, which of the following would be most affected by overgrazing?
a) Wolves
b) Grasses
c) Owls
d) Trees
✅ b) Grasses
What is the main cause of deforestation in the Amazon Rainforest?
a) Ice storms
b) Urban sprawl
c) Agriculture and cattle farming
d) Natural disasters
✅ c) Agriculture and cattle farming
Which biome contains mostly coniferous (cone-bearing) trees?
a) Rainforest
b) Desert
c) Taiga
d) Grassland
✅ c) Taiga
How can we protect biodiversity in our local environment?
a) Kill all insects
b) Cut down more trees
c) Plant native plants and clean up pollution
d) Feed wild animals
✅ c) Plant native plants and clean up pollution
Which biome has animals adapted to conserve water and tolerate heat?
a) Desert
b) Tundra
c) Rainforest
d) Taiga
✅ a) Desert
Why does the tropical rainforest have such high biodiversity?
a) It is dry and has few predators
b) It has a warm, wet climate year-round
c) It has few trees
d) It has limited sunlight
✅ b) It has a warm, wet climate year-round
Which biome is known for having four seasons and shedding trees?
a) Temperate deciduous forest
b) Tropical rainforest
c) Desert
d) Taiga
✅ a) Temperate deciduous forest
What is the term for all the different species living in an ecosystem?
a) Biodiversity
b) Sustainability
c) Symbiosis
d) Habitat
✅ a) Biodiversity
Which is a benefit of having high biodiversity in an ecosystem?
a) Less competition for food
b) More food sources and stability
c) Fewer organisms
d) One predator for every prey
✅ b) More food sources and stability
What does the term “sustainability” mean in an ecosystem?
a) The ability to avoid rainfall
b) The ability to remain healthy and balanced over time
c) The ability to increase pollution
d) The ability to stay the same forever
✅ b) The ability to remain healthy and balanced over time