Choose “Save as PDF” to keep a copy. Use your browser’s paper setting for A4 or Letter.
Worksheet StudioPractice pack · Ages 10-12
Habitats, biomes & food chains
Take your time. Show your thinking.
1. Which biome near the Equator has warm temperatures, high rainfall year-round and the greatest terrestrial biodiversity: a tropical rainforest or a boreal taiga?
Which biome near the Equat… · Habitats, biomes & food ch…
2. Which warm, shallow marine habitat is built by tiny cnidarian polyps secreting calcium carbonate: a coral reef or a kelp forest?
Which warm, shallow marine… · Habitats, biomes & food ch…
3. What gas dissolved in ocean water do marine plants and phytoplankton release during photosynthesis: oxygen or carbon monoxide?
What gas dissolved in ocea… · Habitats, biomes & food ch…
4. Which treeless polar biome has permanently frozen subsoil called permafrost: the Arctic tundra or the savanna?
Which treeless polar biome… · Habitats, biomes & food ch…
5. What term describes the non-living physical factors of an ecosystem (such as sunlight, temperature, water and soil): abiotic factors or biotic factors?
What term describes the no… · Habitats, biomes & food ch…
6. Where a freshwater river meets and mixes with salty ocean water, forming a brackish coastal habitat, is called: an estuary or a glacier?
Where a freshwater river m… · Habitats, biomes & food ch…
7. Which northern forest biome is dominated by cone-bearing evergreen trees such as spruce, fir and pine: boreal forest (taiga) or coral atoll?
Which northern forest biom… · Habitats, biomes & food ch…
8. What microscopic algae live inside reef-building coral tissues and supply them with energy through photosynthesis: zooxanthellae or mosses?
What microscopic algae liv… · Habitats, biomes & food ch…
9. What do we call a network of many interconnected food chains in an ecosystem: a food web or a rock cycle?
What do we call a network … · Habitats, biomes & food ch…
10. Why do desert foxes (such as the fennec fox) have large ears with many blood vessels: to radiate excess body heat and listen for prey, or to swim?
11. Which coastal trees grow in tropical intertidal salt water using prop roots and salt-filtering tissues: mangroves or pines?
Which coastal trees grow i… · Habitats, biomes & food ch…
12. What is the role of fungi and bacteria that break down dead leaves and logs into soil nutrients: decomposers or apex predators?
What is the role of fungi … · Habitats, biomes & food ch…
12 questions · Seed 43 · Age guidance, not curriculum certification
View the answer key
Worksheet StudioAnswer key · Ages 10-12
Habitats, biomes & food chains
Answers and reasoning. Review before teaching.
1. Which biome near the Equator has warm temperatures, high rainfall year-round and the greatest terrestrial biodiversity: a tropical rainforest or a boreal taiga?
Tropical rainforest
Tropical rainforests support dense multi-layered canopies and high species diversity.
2. Which warm, shallow marine habitat is built by tiny cnidarian polyps secreting calcium carbonate: a coral reef or a kelp forest?
Coral reef
Coral polyps build calcium carbonate skeletons that form coral reefs.
3. What gas dissolved in ocean water do marine plants and phytoplankton release during photosynthesis: oxygen or carbon monoxide?
Oxygen
Marine phytoplankton and algae produce oxygen as a byproduct of photosynthesis.
4. Which treeless polar biome has permanently frozen subsoil called permafrost: the Arctic tundra or the savanna?
Arctic tundra
Tundra ecosystems have cold temperatures, short growing seasons and permafrost.
5. What term describes the non-living physical factors of an ecosystem (such as sunlight, temperature, water and soil): abiotic factors or biotic factors?
Abiotic factors
Abiotic factors are the non-living chemical and physical components of an environment.
6. Where a freshwater river meets and mixes with salty ocean water, forming a brackish coastal habitat, is called: an estuary or a glacier?
Estuary
Estuaries are productive brackish-water transition zones between river and sea.
7. Which northern forest biome is dominated by cone-bearing evergreen trees such as spruce, fir and pine: boreal forest (taiga) or coral atoll?
Boreal forest (taiga)
The taiga (boreal forest) spans cold subarctic regions of North America and Eurasia.
8. What microscopic algae live inside reef-building coral tissues and supply them with energy through photosynthesis: zooxanthellae or mosses?
Zooxanthellae
Symbiotic zooxanthellae algae provide corals with photosynthetic nutrients.
9. What do we call a network of many interconnected food chains in an ecosystem: a food web or a rock cycle?
Food web
A food web shows the feeding relationships among multiple species in a community.
10. Why do desert foxes (such as the fennec fox) have large ears with many blood vessels: to radiate excess body heat and listen for prey, or to swim?
To radiate excess body heat and listen for prey
Large ears act as thermal radiators in hot desert environments.
11. Which coastal trees grow in tropical intertidal salt water using prop roots and salt-filtering tissues: mangroves or pines?
Mangroves
Mangroves stabilise coastlines and serve as nurseries for reef fish.
12. What is the role of fungi and bacteria that break down dead leaves and logs into soil nutrients: decomposers or apex predators?
Decomposers
Decomposers recycle nutrients back into the ecosystem.
12 questions · Seed 43 · Age guidance, not curriculum certification
Worksheet StudioPractice pack · Ages 10-12
Habitats, biomes & food chains
Take your time. Show your thinking.
1. Which biome near the Equator has warm temperatures, high rainfall year-round and the greatest terrestrial biodiversity: a tropical rainforest or a boreal taiga?
Which biome near the Equat… · Habitats, biomes & food ch…
2. Which warm, shallow marine habitat is built by tiny cnidarian polyps secreting calcium carbonate: a coral reef or a kelp forest?
Which warm, shallow marine… · Habitats, biomes & food ch…
3. What gas dissolved in ocean water do marine plants and phytoplankton release during photosynthesis: oxygen or carbon monoxide?
What gas dissolved in ocea… · Habitats, biomes & food ch…
4. Which treeless polar biome has permanently frozen subsoil called permafrost: the Arctic tundra or the savanna?
Which treeless polar biome… · Habitats, biomes & food ch…
5. What term describes the non-living physical factors of an ecosystem (such as sunlight, temperature, water and soil): abiotic factors or biotic factors?
What term describes the no… · Habitats, biomes & food ch…
6. Where a freshwater river meets and mixes with salty ocean water, forming a brackish coastal habitat, is called: an estuary or a glacier?
Where a freshwater river m… · Habitats, biomes & food ch…
7. Which northern forest biome is dominated by cone-bearing evergreen trees such as spruce, fir and pine: boreal forest (taiga) or coral atoll?
Which northern forest biom… · Habitats, biomes & food ch…
8. What microscopic algae live inside reef-building coral tissues and supply them with energy through photosynthesis: zooxanthellae or mosses?
What microscopic algae liv… · Habitats, biomes & food ch…
9. What do we call a network of many interconnected food chains in an ecosystem: a food web or a rock cycle?
What do we call a network … · Habitats, biomes & food ch…
10. Why do desert foxes (such as the fennec fox) have large ears with many blood vessels: to radiate excess body heat and listen for prey, or to swim?
11. Which coastal trees grow in tropical intertidal salt water using prop roots and salt-filtering tissues: mangroves or pines?
Which coastal trees grow i… · Habitats, biomes & food ch…
12. What is the role of fungi and bacteria that break down dead leaves and logs into soil nutrients: decomposers or apex predators?
What is the role of fungi … · Habitats, biomes & food ch…
12 questions · Seed 43 · Age guidance, not curriculum certification
Worksheet StudioAnswer key · Ages 10-12
Habitats, biomes & food chains
Answers and reasoning. Review before teaching.
1. Which biome near the Equator has warm temperatures, high rainfall year-round and the greatest terrestrial biodiversity: a tropical rainforest or a boreal taiga?
Tropical rainforest
Tropical rainforests support dense multi-layered canopies and high species diversity.
2. Which warm, shallow marine habitat is built by tiny cnidarian polyps secreting calcium carbonate: a coral reef or a kelp forest?
Coral reef
Coral polyps build calcium carbonate skeletons that form coral reefs.
3. What gas dissolved in ocean water do marine plants and phytoplankton release during photosynthesis: oxygen or carbon monoxide?
Oxygen
Marine phytoplankton and algae produce oxygen as a byproduct of photosynthesis.
4. Which treeless polar biome has permanently frozen subsoil called permafrost: the Arctic tundra or the savanna?
Arctic tundra
Tundra ecosystems have cold temperatures, short growing seasons and permafrost.
5. What term describes the non-living physical factors of an ecosystem (such as sunlight, temperature, water and soil): abiotic factors or biotic factors?
Abiotic factors
Abiotic factors are the non-living chemical and physical components of an environment.
6. Where a freshwater river meets and mixes with salty ocean water, forming a brackish coastal habitat, is called: an estuary or a glacier?
Estuary
Estuaries are productive brackish-water transition zones between river and sea.
7. Which northern forest biome is dominated by cone-bearing evergreen trees such as spruce, fir and pine: boreal forest (taiga) or coral atoll?
Boreal forest (taiga)
The taiga (boreal forest) spans cold subarctic regions of North America and Eurasia.
8. What microscopic algae live inside reef-building coral tissues and supply them with energy through photosynthesis: zooxanthellae or mosses?
Zooxanthellae
Symbiotic zooxanthellae algae provide corals with photosynthetic nutrients.
9. What do we call a network of many interconnected food chains in an ecosystem: a food web or a rock cycle?
Food web
A food web shows the feeding relationships among multiple species in a community.
10. Why do desert foxes (such as the fennec fox) have large ears with many blood vessels: to radiate excess body heat and listen for prey, or to swim?
To radiate excess body heat and listen for prey
Large ears act as thermal radiators in hot desert environments.
11. Which coastal trees grow in tropical intertidal salt water using prop roots and salt-filtering tissues: mangroves or pines?
Mangroves
Mangroves stabilise coastlines and serve as nurseries for reef fish.
12. What is the role of fungi and bacteria that break down dead leaves and logs into soil nutrients: decomposers or apex predators?
Decomposers
Decomposers recycle nutrients back into the ecosystem.
12 questions · Seed 43 · Age guidance, not curriculum certification