Directions
Read the following questions. Choose the right answer.
There is only ONE correct answer to each question.
The desert white truffle is a fungus that lives on the roots of the plant Helianthemum (rockrose). Which of the following describes the nature of their relationship?
- Parasitic
- Symbiotic
- Obligately heterotrophic
- Facultatively heterotrophic
Show answer
Correct answer: B. Symbiotic
Why
The truffle forms a mutually beneficial (mycorrhizal-like) association with the rockrose's roots, which is a symbiotic relationship.