| Mycorrhizal biotechnology has been used in rehabilitating degraded sites because Mycorrhiza enables the plants to |
| 1. Resist drought and increase absorptive area |
| 2. Tolerate extremes of pH |
| 3. Resist disease infestation |
| Select the correct answer using the codes given below. |
A) 1 only
B) 2 and 3 only
C) 1 and 3 only
D) 1, 2 and 3
Correct Answer: D
Solution :
[d] Mycorrhizal associations play vital role in plant nutrition. They greatly increase the efficiency of nutrient and water uptake; enhance resistance to pathogens, and buffer plant species against several environmental stresses and drought resistance. Mycorrhizal also improve plant growth and survival in soils contaminated by heavy metals.
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