Question

There exists a close association between the algae and the fungus within a lichen. The fungus

• A. Fixes the atmospheric nitrogen for the alga.
• B. Provides protection, anchorage and absorption for the alga.
• C. Provides food for the alga.
• D. Releases oxygen for the alga.

Answer 1

The correct option is B Provides protection, anchorage and absorption for the alga.

The photobiont supplies the association of organic carbon from photosynthesis, and the mycobiont ensures protection, and regulates the supply of minerals and water. The nutritional exchange between partners is probably much more complex than exchange of water and minerals for organic carbon.