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Which product is synthesized by microorganism at commercial level for mankind?
Microorganisms are utilized in the commercial production of various products beneficial to mankind. These include vaccines, biofuels, and alcohol. Hence, the correct answer is 'All the given'.
Which group of microorganisms is useful as a bio control agent?
Bio control agents are organisms that are used to control pests and diseases in agriculture. Trichoderma, Pseudomonas, and Bacillus Thuringiensis are well-known bio control agents. Trichoderma is a fungus that combats plant pathogens, Pseudomonas is a bacterium that can inhibit the growth of harmful microbes, and Bacillus Thuringiensis is a bacterium that produces toxins against insect larvae. Therefore, option o2 is correct.
Which bacteria are useful in anaerobic sludge digestures tank?
Anaerobic bacteria are used in anaerobic sludge digesters because they can break down organic matter in the absence of oxygen, producing biogas (mainly methane) and reducing the volume of sludge. This process is essential in wastewater treatment plants to manage and treat the sludge effectively. Hence, option o4 is correct.
In which tank flocks is sedimented and forms respectively?
Who has established Ganga and Yamuna action plan?
The Ganga and Yamuna action plans were established by the Ministry of Environment, Forest and Climate Change (MoEFCC) in India. These plans aim to reduce pollution, restore the river ecosystems, and improve water quality through various initiatives and projects.
What is sedimented flocks?
Sedimented flocks refer to 'active sludge,' which is formed during the secondary treatment of wastewater. In this process, microorganisms break down organic matter, and the resulting biomass forms flocks that settle at the bottom of the settling tank.
Which statement is correct for STPs?
All the given statements are correct for Sewage Treatment Plants (STPs). The value of Biochemical Oxygen Demand (BOD) decreases in the effluent, flocks are sedimented in the settling tank, and biogas is formed at the end of the process. Thus, option 'All the given' is the correct answer.
Which odd for mixed gases which produces in anaerobic sludge diagesters ?
The correct option is CH4 (methane). The odd one out is CH3 because it is not a stable molecule and does not exist under normal conditions. In anaerobic sludge digesters, the gases typically produced include carbon dioxide (CO2), methane (CH4), and hydrogen sulfide (H2S).
Which bacteria is remaining in alimentary canal of herbivores?
Methanogens are a group of archaea that produce methane as a metabolic byproduct in anoxic conditions. They are commonly found in the alimentary canal of herbivores, where they help in the process of digesting cellulose. Other bacteria listed are not typically involved in this specific digestive role.
What is indirectly called the measurement of organic matter of water?
BOD, or Biochemical Oxygen Demand, is a measure of the amount of oxygen that microorganisms will consume while decomposing organic matter in water. Hence, it indirectly indicates the amount of organic matter present in the water.
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The bank mixes NEET previous year questions (PYQs) with practice questions, each tagged with its exam appearances where applicable.