3.3 Recycling in ecosystems

Which category of organisms contributes to recycling dead organisms in an ecosystem?

• Producers

• Consumers

• Scavengers and decomposers

• Herbivores

What is the role of scavengers in an ecosystem?

• They produce their own food through photosynthesis.

• They break down dead organisms into nutrients.

• They provide energy to other consumers.

• They compete with producers for resources.

What is the primary source of energy for decomposers?

• Sunlight

• Other decomposers

• Detritus from dead organisms

• Oxygen

What is the primary function of microorganisms in decomposition?

• They compete with other decomposers for resources.

• They feed on detritivores.

• They convert detritus into energy.

• They help speed up decay by breaking down organic material.

Which group of organisms are considered microorganisms?

• Bacteria

• Fungi

• Insects

• Slugs

What role do bacteria play in our bodies?

• They help plants grow by providing nutrients.

• They produce energy through photosynthesis.

• They help us digest food and produce vitamins.

• They compete with other microorganisms for space.

What is the primary role of detritivores in the decomposition process?

• They directly produce energy from sunlight.

• They compete with scavengers for resources.

• They ingest detritus, increasing surface area for decomposition.

• They convert detritus into glucose through photosynthesis.

What is the significance of the "green food chain" and the "brown food chain"?

• They represent two different types of ecosystems.

• They illustrate the distinction between herbivores and carnivores.

• They show the flow of energy from producers to consumers.

• They highlight the role of scavengers and decomposers in an ecosystem.

Why do some organisms feed on detritus directly, even though it may seem unappetizing to humans?

• They have evolved to tolerate detritus as a food source.

• They lack the ability to consume other organisms.

• Detritus provides a rich source of nutrients and energy.

• They are scavengers and cannot find other food sources.

How does the brown food chain relate to the green food webs in an ecosystem?

• They are entirely separate and do not interact.

• The brown food chain relies on the energy stored in living plants.

• The brown food chain complements the green food web by recycling nutrients.

• The brown food chain directly competes with the green food web for resources.