Biomes and Ecosystems Quiz

What is the primary source of energy in most ecosystems?

• Wind

• Sunlight

• Geothermal heat

• Geothermal heat

What is the role of decomposers in an ecosystem?

• To produce oxygen

• To break down dead organic matter

• To regulate temperature

• To provide nutrients to plants

What is the primary characteristic of a desert biome?

• High humidity

• Abundant precipitation

• Sparse vegetation

• Broad-leaved forests

Which biome is characterized by high rainfall and dense canopies of vegetation?

• Taiga

• Desert

• Tundra

• Tropical rainforest

Which biome is characterized by low precipitation and extreme temperature variations between day and night?

• Tropical rainforest

• Desert

• Tundra

• Taiga

Where are the largest rainforests located?

• Europe

• North America

• Brazil, Congo (Zaire), Indonesia

• Australia, New Zealand

What is the defining characteristic of a tropical rainforest?

• Extreme cold temperatures

• Sparse vegetation

• High annual rainfall

• Sandy soil

Which layer of the tropical rainforest canopy contains giant trees reaching heights of 75 meters or more?

• Emergents

• Canopy

• Understory

• Shrub layer

Which biome is characterized by coniferous forests and is located near the Arctic tundra?

• Taiga

• Savanna

• Desert

• Tropical rainforest

What factor contributes to the low precipitation in desert biomes?

• High humidity

• Cold temperatures

• Rain shadows

• Proximity to large bodies of water