The zone of soil showing microbial activity around the roots of higher plants is called:
Correct answer: C. Rhizosphere
- A. Soil microflora
- B. Rhizoplane
- C. Rhizosphere
- D. All of these
Explanation
The rhizosphere is the soil zone directly influenced by plant roots and showing intense microbial activity due to root exudates. The rhizoplane refers specifically to the root surface, not the surrounding soil.
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