9SCI Weeks 1-3

What is the primary source of energy in most food chains?

• Decomposers

• Producers

• Consumers

• Sunlight

In a food chain, which organism is typically a primary consumer?

• Grass

• Rabbit

• Fox

• Hawk

Which of the following best describes a food web?

• A single pathway of energy transfer

• A network of interconnected food chains

• A diagram showing only producers and consumers

• A linear sequence of organisms

What happens to energy as it moves through a food chain?

• It increases

• It stays the same

• It decreases

• It is recycled

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

• Sunlight

• Water

• Trees

• Temperature

What do biotic factors in an ecosystem include?

• Only plants

• Only animals

• Living organisms

• Non-living organisms

Which of the following is NOT a biotic factor?

• Bacteria

• Fungi

• Soil

• Insects

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

• Bacteria

• Plants

• Rocks

• Animals

Which of the following organisms is a producer in an ecosystem?

• Fungi

• Grass

• Wolf

• Deer

Which of the following is a characteristic of a stable ecosystem?

• High biodiversity

• Low energy flow

• Few species interactions

• Constant population sizes