Ecosystem Concepts Quiz

What is one of the main topics covered in Lesson 2?

• The water cycle in an ecosystem

• The flow of energy through an ecosystem

• The carbon cycle in an ecosystem

• The nitrogen cycle in an ecosystem

Which of the following is included in the study of Lesson 2?

• Photosynthesis and respiration

• Food Chains, food webs, and pyramid models

• Weather patterns and climate change

• Soil composition and erosion

How do autotrophs obtain energy?

• By consuming other organisms

• By capturing energy from sunlight or inorganic substances

• By eating plants and animals

• By decomposing organic matter

What is the primary role of autotrophs in an ecosystem?

• They are primary consumers

• They are primary producers of food

• They are decomposers

• They are secondary consumers

How do heterotrophs differ from autotrophs?

• Heterotrophs produce their own food

• Heterotrophs obtain energy by consuming other organisms

• Heterotrophs capture energy from sunlight

• Heterotrophs decompose organic matter

Which of the following is an example of a herbivore?

• Lion

• Bear

• Cow

• Human

What do omnivores eat?

• Only plants

• Only animals

• Both plants and animals

• Only insects

What are detritivores responsible for in an ecosystem?

• Decomposing organic materials and returning nutrients to the soil, air, and water

• Producing oxygen through photosynthesis

• Consuming living plants and animals

• Pollinating flowers

Which organisms are also considered decomposers besides detritivores?

• Birds and mammals

• Fungi and bacteria

• Fish and amphibians

• Reptiles and insects

Why is the role of detritivores important in the biosphere?

• They produce food for humans

• They prevent the accumulation of dead organisms

• They create new habitats for animals

• They increase the oxygen levels in the atmosphere