Mycorrhizal biotechnology applications
Question
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
Options
1 only
2 and 3 only
1 and 3 only
1, 2 and 3
Explanation
All three statements are correct regarding mycorrhizal benefits. Statement 1: Mycorrhizal fungi extend the root system and increase nutrient and water absorption capacity, helping plants resist drought. Statement 2: Mycorrhizae help plants tolerate acidic and alkaline soils by buffering pH extremes through their hyphal networks. Statement 3: Mycorrhizal associations improve plant health and disease resistance by enhancing nutrient uptake and producing antimicrobial compounds. Mycorrhizae are widely used in phytoremediation and ecological restoration of degraded lands, mining sites, and polluted areas because they provide these multiple benefits simultaneously. > Mycorrhizal Functions: Mycorrhizae improve water-nutrient uptake, pH tolerance, and disease resistance, making them invaluable for ecological restoration and bioremediation. Answer: (d).
Question details
Year
2014
Paper
GS Paper 1
Question
Q97
Subject
Environment
Sub-topic
Biodiversity and Bioremediation
Type
Statement-based
Difficulty
Medium
Nature
Static
Source hint
NCERT Biology - Microbial Associations
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