Let me share with you a comparison between Mycorrhiza and Lichen.
| Aspect | Mycorrhiza | Lichen |
| Introduction | Symbiotic association between a fungus and the roots of a plant. | Symbiotic association between a fungus and a photosynthetic partner such as algae or cyanobacteria |
| Components | Fungus + Plant roots | Fungus + Algae or Cyanobacteria |
| Nature of Symbiosis | Mutualistic | Mutualistic |
| Function | Facilitates nutrient exchange between the fungus and the plant, enhancing plant nutrient uptake. | Facilitates a mutual exchange of nutrients between the fungus and the photosynthetic partner. |
| Plant Dependency | Many plants form mycorrhizal associations. | Lichens can grow on a variety of surfaces, including rocks and tree bark. |
| Nutrient Source | Mycorrhizal fungi provide mineral nutrients to the plant in exchange for carbohydrates. | Lichens obtain nutrients from the environment, primarily through rainwater and atmospheric deposition. |
| Habitat | Found in the soil around plant roots. | Can grow in diverse environments, including terrestrial, rocky, and even extreme conditions. |
| Ecological Importance | Enhances plant growth, nutrient acquisition and overall ecosystem stability. | Plays a role in soil formation and is often among the first colonizers in harsh environments. |
| Sensitivity to Pollution | Some mycorrhizal fungi are sensitive to environmental pollution. | Lichens are often used as bioindicators for air quality due to their sensitivity to pollutants. |
| Examples | · Ectomycorrhiza · Endomycorrhiza | · Crustose · Foliose · Fruticose lichens |