Category: CSIR NET Life Science Previous Year Questions and Solution on applied biology

Chinese Brake fern (Pteris vittata) is hyperaccumulator of: (1) Cadmium. (2) Arsenic. (3) Lead.          (4) Chromium Option-wise explanation Cadmium Some plants (for example Thlaspi/Noccaea caerulescens) are classic […]

13. Heavy metal (cadmium & zinc) resistance in Thalspie curulesiensis is due to (1) Presence of cation efflux pumps (metal ATPase) (2) Presence of Na-K pumps (3) Metal adsorbtion (4) […]

Among the following which plant family has been extensively used for phyto-remediation (1) Poaceae      (2) Brassicaceae (3) Malvaceae (4) Anonaceae Option-wise explanation Poaceae Grasses such as Phragmites, Vetiveria, and Miscanthus are important […]

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 […]