Ecosystems of the Earth - MCQ Quiz

What is the largest ecosystem on Earth?

• The rainforest

• The biosphere

• The ocean

• The desert

An ecosystem consists of which two main types of factors?

• Primary and secondary

• Abiotic and biotic

• Static and dynamic

• Living and mechanical

Which of the following is an abiotic factor in an ecosystem?

• Food supply

• Number of predators

• Water temperature

• Disease transmission

Which of the following is a biotic factor in an ecosystem?

• Sunlight

• Soil nutrients

• Number of predators

• Air pressure

What does biodiversity refer to?

• The number of predators in an ecosystem

• The biological variety of an area

• The temperature and weather conditions of an area

• The levels of pollution in an ecosystem

Which of the following is an example of a land ecosystem?

• Coral reefs

• Rivers

• Tropical rainforests

• Ponds

What kind of temperature do tropical rainforests experience throughout the year?

• Freezing cold

• Warm

• Very cold in winter and hot in summer

• Dry and fluctuating

What conditions help tropical rainforests support a high number of species?

• Cold temperatures and little sunlight

• Strong winds and extreme drought

• High amounts of rainfall, sunshine, and warm temperatures

• High salinity and acidic soil

Which type of ecosystem has the lowest biodiversity?

• Tropical rainforests

• Coral reefs

• Deserts

• Temperate woodlands

What makes desert ecosystems particularly challenging for life?

• High biodiversity

• Little available water

• Consistent rainfall

• Extreme population density