Fungi and Bacteria as Decomposers

The video discusses saprotrophs, organisms that derive energy from decomposing dead matter. It highlights three main groups: fungi, bacteria, and water molds. Fungi secrete enzymes to break down matter, bacteria are single-celled decomposers found everywhere, and water molds clean aquatic environments. The video concludes with a summary of these groups.

What is the primary source of energy for saprotrophs?

• Sunlight

• Dead and decaying organisms

• Living plants

• Minerals in soil

Which of the following is a common example of fungi?

• Algae

• Mushrooms

• Yeast

• Lichen

How do fungi obtain nutrients from nonliving matter?

• By photosynthesis

• By consuming other organisms

• By secreting enzymes

• By absorbing sunlight

Where can bacteria, as saprotrophs, be found?

• Only in the air

• On every surface on Earth

• Only in water

• Only in soil

What role do bacteria play when an organism dies?

• They decompose the organism

• They preserve the organism

• They protect the organism

• They transport the organism

In which environments are water molds primarily found?

• Deserts

• Forests

• Mountains

• Aquatic environments

What is the main function of water molds in aquatic environments?

• To filter water

• To provide shelter for fish

• To decompose dead plants and animals

• To produce oxygen