Exploring Ecosystems and Interactions

Which of the following is always a producer in a food chain?

• Grass

• Lion

• Eagle

• Snake

What is the main source of energy for most ecosystems?

• The Moon

• The Sun

• Wind

• Soil

Which biome is characterized by very low temperatures and permafrost?

• Desert

• Tundra

• Rainforest

• Grassland

What term describes a relationship where both organisms benefit?

• Parasitism

• Mutualism

• Commensalism

• Predation

Which organism is a primary consumer in a food chain?

• Oak tree

• Rabbit

• Hawk

• Mushroom

Which of the following best describes a food web?

• A single line of energy flow

• A network of interconnected food chains

• Only producers and consumers

• Only carnivores and herbivores

Which of the following is an example of commensalism?

• A bee pollinating a flower

• A barnacle attaching to a whale

• A tapeworm in a dog

• A lion hunting a zebra

Which biome receives the most rainfall?

• Desert

• Tundra

• Tropical rainforest

• Savanna

Which trophic level do herbivores occupy in a typical food chain?

• First

• Second

• Third

• Fourth

What is the main role of decomposers in an ecosystem?

• Produce food

• Break down dead organisms

• Hunt prey

• Absorb sunlight