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Which of the following does not represents strategy for phytoremediation? (1) Phyto-degradation (2) Phyto-mining (3) Continuous removal through hyper accumulators (4) Chelate mediated extraction of pollutants Concept and option-wise explanation […]

The process of phytoremediation where complexation and immobilization of toxin takes place within the soil is called (1) phytoextraction.      (2) phytodegradation (3) phytovolatilization (4) phytostabilization. Explanation of each […]

A plot of soil contaminated with diesel oil was inoculated with oyster mushrooms. After 4 weeks, more than 95% of the polycyclic aromatic hydrocarbons had been reduced to non-toxic compounds. […]

Microorganisms having nitrilase activity can be enriched from soil samples by supplying nitriles as the sole nitrogen or carbon source in the growth medium. A problem with this approach is […]

Microbial leaching involves the process of dissolution of metals from ore breaking rocks using microorganisms. Which one of the following bacteria helps in leaching copper from its ore? (1) Acidithiobacillus […]

Column A lists names of microorganisms and column B lists the pollutants that are degraded by the microbes. Which one of the following options correctly matches the organism to the […]

Desulphovibrio desulfuricans (A) and Pseudomonas species (B) are involved in mercury bioremediation. Which of the statement below is correct? (1) A converts methyl mercury to mercuric ion, B converts mercury […]

The following are certain facts regarding bioremediation: A. Biodegradable plastics are made using polyhydroxy alkanoates (PHAs) such as polyhydroxybutyrate (PHB). B. Pseudomonas putida F1 bacterial strain is involved in degradation […]

Bio-augmentation refers to: (1) Developing microbial strains through genetic engineering which can degrade pollutants and toxic compounds efficiently. (2) Ex- situ bioremediation of toxins from soil or any other contaminant […]

2. Release of nutrients, oxidants or electron donors into the environment to stimulate naturally occurring microorganisms to degrade a contaminant, is referred to as (1) biostimulation.                                           (2) phytoremediation. (3) bioaugmentation.                                       […]