Which one of the following is a useful functional association between fungi and the roots of higher plants?

1. Biofertilizer
2. Coralloid root
3. Lichen
4. Mycorrhiza

Explanation

Option (d) is correct

• Mycorrhiza is a beneficial symbiotic association between fungi and the roots of higher plants. The fungi help plants absorb water and minerals, especially phosphorus, while the plant provides food to the fungi.

Answer: (d) Mycorrhiza