Decomposers and Their Roles

The video explains the role of decomposers, specifically saprotrophs and detritivores, in breaking down organic matter. Saprotrophs use enzymes to decompose materials, while detritivores ingest organic matter. The video highlights the conditions needed for saprotrophs to function and provides examples of both types of decomposers. It concludes with a call to explore more about decomposers through additional resources.

What seasonal change is mentioned as a precursor to the role of decomposers?

• Winter snow falling

• Summer heat increasing

• Autumn leaves falling

• Spring flowers blooming

What do saprotrophs use to break down organic matter?

• Teeth

• Enzymes

• Acids

• Sunlight

Which of the following is NOT a requirement for saprotrophs to function?

• Water

• Oxygen

• High pH

• Temperature between 1 and 35 degrees Celsius

Which of these is an example of a saprotroph?

• Dung beetle

• Earthworm

• Termite

• Bacteria

How do detritivores differ from saprotrophs in their method of decomposition?

• They use sunlight

• They ingest organic matter

• They use acids

• They decompose only living organisms

Which of the following is NOT considered detritus?

• Fallen leaves

• Manure

• Living plants

• Dead animals

Which of these is an example of a detritivore?

• Bacteria

• Fly

• Mold

• Mushroom

What is a key difference between detritivores and scavengers?

• Scavengers decompose only plants

• Detritivores eat large quantities of organic matter

• Scavengers eat small quantities of organic matter

• Detritivores eat small quantities of organic matter

Which of the following is NOT a detritivore?

• Ant

• Fungus

• Millipede

• Termite

What is the role of decomposers in the ecosystem?

• To consume living organisms

• To create new plants

• To break down organic matter

• To produce oxygen