Questions on Terrestrial and Aquatic Biomes
Multiple-Choice Questions: Terrestrial and Aquatic Biomes
1. Which of the following is not a terrestrial biome?
A) Desert
B) Savanna
C) Tundra
D) Estuary
E) Temperate forest
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2. Which of the following is a freshwater aquatic biome?
A) Coral reef
B) Ocean trench
C) Lake
D) Estuary
E) Salt marsh
3. Which biome is characterized by frozen subsoil (permafrost) and low biodiversity?
A) Taiga
B) Tropical rainforest
C) Tundra
D) Desert
E) Chaparral
4. What is a key characteristic of aquatic biomes that influences the type of organisms present?
A) Soil composition
B) Salinity
C) Wind patterns
D) Tree density
E) Elevation
5. The taiga is also known as the:
A) Tropical dry forest
B) Boreal forest
C) Alpine tundra
D) Mangrove swamp
E) Steppe
6. Which of the following aquatic biomes is a transition zone between freshwater and marine environments?
A) River delta
B) Lake
C) Estuary
D) Coral reef
E) Pond
7. Which biome has the highest biodiversity on land?
A) Temperate forest
B) Tundra
C) Desert
D) Tropical rainforest
E) Taiga
8. What is the main difference between a pond and a lake in ecology?
A) Salinity
B) Temperature
C) Size and depth
D) Latitude
E) Wind exposure
9. Which of the following is true about the desert biome?
A) It receives over 200 cm of rainfall annually
B) It supports dense tree growth
C) It has low precipitation and sparse vegetation
D) It is found only at the poles
E) It has rich soil and many rivers
10. Coral reefs are found in:
A) Freshwater rivers
B) Arctic zones
C) Shallow, warm marine waters
D) Estuaries
E) Temperate lakes
11. The benthic zone of an aquatic biome refers to:
A) The water’s surface layer
B) The area with the most light
C) The deep ocean trenches
D) The bottom of a body of water
E) Where freshwater meets seawater
12. The littoral zone in a freshwater lake is the area:
A) Beyond the edge of the lake
B) With the deepest water
C) Near the shore with abundant sunlight
D) Covered by ice all year
E) Found in saltwater only
13. Which terrestrial biome experiences seasonal rainfall and is dominated by grasses and scattered trees?
A) Tundra
B) Savanna
C) Taiga
D) Tropical rainforest
E) Desert
14. The aphotic zone in an aquatic environment is defined as:
A) Where no sunlight penetrates
B) A place with high biodiversity
C) The most nutrient-rich layer
D) Where freshwater enters the ocean
E) Where coral reefs grow
15. Which biome is found in California and parts of the Mediterranean, and is fire-prone?
A) Chaparral
B) Savanna
C) Temperate rainforest
D) Taiga
E) Grassland
16. Which of these marine biomes is most productive in terms of photosynthesis?
A) Benthic zone
B) Aphotic zone
C) Pelagic open ocean
D) Intertidal zone
E) Photic zone
17. What distinguishes temperate grasslands from savannas?
A) Grasslands have more trees
B) Savannas have permafrost
C) Grasslands are wetter
D) Savannas are warmer with seasonal rain and some trees
E) Savannas are colder
18. Which biome has acidic, nutrient-poor soils but dense evergreen trees?
A) Tundra
B) Temperate rainforest
C) Tropical rainforest
D) Taiga
E) Desert
19. Which aquatic biome is highly productive and supports nurseries for many marine species?
A) Open ocean
B) Estuary
C) Deep sea trench
D) Benthic zone
E) Arctic sea
20. Mangrove forests are found in:
A) Freshwater lakes in Canada
B) Tropical coastal marine regions
C) Desert riverbeds
D) Mountain streams
E) Tundra wetlands
Answer Key with Full Explanations
1. D – Estuary
Estuaries are aquatic biomes, not terrestrial.
2. C – Lake
Lakes are bodies of freshwater.
3. C – Tundra
Tundras have permafrost and limited vegetation due to cold climates.
4. B – Salinity
Aquatic organisms are adapted based on water salinity (freshwater vs marine).
5. B – Boreal forest
Taiga is another name for the cold, coniferous boreal forest.
6. C – Estuary
Estuaries are where freshwater and saltwater mix.
7. D – Tropical rainforest
These have the greatest biodiversity of any land biome.
8. C – Size and depth
Lakes are generally larger and deeper than ponds.
9. C – It has low precipitation and sparse vegetation
Deserts get very little rainfall and have specialized vegetation.
10. C – Shallow, warm marine waters
Coral reefs thrive in warm, sunlit, shallow saltwater environments.
11. D – The bottom of a body of water
The benthic zone includes the sediment and organisms living at the bottom.
12. C – Near the shore with abundant sunlight
The littoral zone supports aquatic plants and high productivity.
13. B – Savanna
Warm year-round, savannas have wet and dry seasons, with grasses and few trees.
14. A – Where no sunlight penetrates
The aphotic zone is below the reach of sunlight and is often very cold and dark.
15. A – Chaparral
Chaparral regions have hot, dry summers and are prone to wildfires.
16. E – Photic zone
Sunlight penetrates this zone, allowing photosynthesis to occur.
17. D – Savannas are warmer with seasonal rain and some trees
Grasslands are mostly treeless, whereas savannas have scattered trees.
18. D – Taiga
The taiga has nutrient-poor, acidic soils but dense conifer forests.
19. B – Estuary
Estuaries are rich in nutrients and are important breeding areas for marine life.
20. B – Tropical coastal marine regions
Mangroves grow in brackish water where salt and freshwater mix.
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