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How to Distinguish Between Algae & Fungi

Algae and fungi have a symbiotic relationship because together they merge to compose lichen organisms. On their own, however, these two organisms have very little in common. Fungi (plural for fungus) come in many forms such as yeasts, molds and mushrooms. They decompose or break down organic matter by absorbing nutrients into their cells. Algae (plural for alga) meanwhile are like plants in that they grow by absorbing light through photosynthesis. You can easily distinguish between algae and fungi by examining them.

Things You'll Need

Microscope

Instructions

- 1
  Look over the area where you have found the organism in question. If the area is primarily made up of water, it is likely alga. If you find the plant on land, especially a nutrient-rich area such as woods or a forest, it is most likely fungus.
- 2
  Inspect the organism to see if it is attached to anything. Fungi usually attach to either soil, wood or anything that may be rotting or decomposing. Algae are usually free-floating, and although you may find algae on the side of a pool or fish tank, it is not actually attached to anything, but rather hovering near the sides.
- 3
  Examine the structure of the organism under a microscope. Fungi are made up of groups of hyhae or filaments which have joined together. Algae, whether small or large, can be made up of single or multiple cells as well as filaments and colonies.

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