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Botany MCQs for NEET — Practice Questions with Answers

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Find odd group out: -

A. Carbomycin, bactitracin, tetracytidine, fumagillin B. Butaric acid, Isotric acid, Lectic acid, Melic acid C. Amylase, Protease, Lipase, Csellulase D. Glucomylase, Renin, Glucose Oxicide

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Which pest is obtained from Pseudomonas?

A. Quantum-400 B. Quantum-4000 C. Quantum-40000 D. Quantum-40

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Which organisms useful to prepare Alcohol?

A. Saccharomyces Ceribicie B. Streptomyces Saccharomyces C. Streptococcus cerbicie D. Saccherohmycis Cerevisiae

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Explanation

The correct organism useful for preparing alcohol is Saccharomyces Cerevisiae. This species of yeast is commonly used in the fermentation process to produce ethanol (alcohol) from sugars. The correct option is 'Saccherohmycis Cerevisiae', despite the typo in the spelling.

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which of these nitrogen fixing bacteria does not live in symbiotic association with host plant?

Rhizobium

azotobacter

frankia

xanthomonas

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Explanation

Azotobacter is a free-living nitrogen-fixing bacterium that does not form symbiotic associations with plants. In contrast, Rhizobium and Frankia form symbiotic relationships with leguminous plants and actinorhizal plants, respectively. Xanthomonas is not known for nitrogen fixation.

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Which is correct sequence for purification process of STPs?

A. Primary Sludge----->Effluent ----->Flocks -----> Active Sludge----->Biogas B. Flocks ----->Primary Sludge----->Effluent ----->Active Sludge ---->Biogas C. Primary Sludge----->Effluent----->Active Sludge ----->Flocks ----->Biogas D. Effluent ----->Flocks---->Primary Sludge ----->Active Sludge----->Biogas

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Explanation

The correct sequence for the purification process of Sewage Treatment Plants (STPs) is: Primary Sludge -----> Effluent -----> Flocks -----> Active Sludge -----> Biogas. This sequence involves the initial removal of primary sludge, followed by the treatment of effluent, formation of flocks, conversion to active sludge, and finally biogas production.

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Which product is synthesized by microorganism at commercial level for mankind?

A. Vaccine B. Biofuel C. Alcohol D. All the given

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Explanation

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'.

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Which group of microorganisms is useful as a bio control agent?

A. Cyanobacteria, Bacula virus, Trichoderma B. Trichoderma, Pseudomonas, Bacillus Thuringiensis C. Rhizobium, Cyanobacteria, Pseudomonas D. All the given

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Explanation

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.

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Which bacteria are useful in anaerobic sludge digestures tank?

A. Hypo geal B. Aerobic C. Free living D. Anaerobic

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Explanation

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.

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In which tank flocks is sedimented and forms respectively?

A. Settling tank, Aeration tank B. Aeration tank, Effluent tank C. Aeration tank, Settling tank D. Effluent tank, Anearoble tank

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Who has established Ganga and Yamuna action plan?

A. IARI B. KVIC C. Ministry of forest and Environment D. Integrated pest control management

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Explanation

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.

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