Question

The figure shows the cross section of lichen. Can you identify which components are shown in yellow and green?

• A. Yellow: Fungus, Green: Algae
• B. Yellow: Algae, Green: Fungus
• C. Yellow: Bacteria, Green: Algae
• D. Yellow: Algae, Green: Bacteria

Answer 1

The correct option is A Yellow: Fungus, Green: Algae

Lichens are not single organisms. They are made up of a fungus and algae in a symbiotic relationship. The algae produce food by photosynthesis while the fungus provides protection. The yellow thread-like structures in the diagram are the fungal component, and the green coloured structures are the algal component of the lichen.