NEET 2005
- Exam
- NEET
- Year
- 2005
- Subject
- Zoology
- Chapter
- Organisms and Populations
NEET 2005 · Zoology · Organisms and Populations
There exists a close association between the alga and the fungus...
There exists a close association between the alga and the fungus within a lichen. The fungus:
Options
- Aprovides protection, anchorage and absorption for the algae
- Bprovides food for the alga
- Cfixes the atmospheric nitrogen for the alga
- Dreleases oxygen for the alga.
Correct answer
A. provides protection, anchorage and absorption for the algae
Step-by-step solution
Lichens are unique, double organisms that consist of two unrelated components, an alga and/ or cyanobacterium (photobiont) and a fungus (mycobiont). Lichens are unique, double organisms that consist of two unrelated components, an alga and/or cyanobacterium (photobiont) and a fungus (mycobiont)
Related Theory
Lichens have a body called a thallus, an outer, tightly packed fungal layer called a cortex, and an inner, loosely packed fungal layer called a medulla. Lichens use hyphal bundles called rhizines to attach to the substrate.