Question

The mycorrhiza in relationship with land plants is a ______.

• A. fungus
• B. protozoan
• C. bacterium
• D. virus

Hint:

Mycorrhiza always involves fungi and plant roots and helps in better mineral absorption.

Answer 1

The Correct Option is A

Step 1: Understanding mycorrhiza.
Mycorrhiza is a symbiotic association between the roots of higher plants and certain fungi. In this relationship, the fungus helps the plant in absorption of water and minerals, especially phosphorus, while the plant provides food to the fungus.
Step 2: Analyzing the options.
(A) fungus: Correct. Mycorrhiza is specifically a fungal association with plant roots.
(B) protozoan: Incorrect. Protozoans do not form mycorrhizal associations.
(C) bacterium: Incorrect. Although bacteria form other symbiotic relationships, mycorrhiza involves fungi only.
(D) virus: Incorrect. Viruses are obligate parasites and do not form mutualistic associations like mycorrhiza.
Step 3: Conclusion.
The correct answer is (A) fungus because mycorrhiza represents a fungal association with land plants.