Biology
Microbes and Plant Diseases
1,145 Questions
Microbes and plant diseases examine the role of fungi, bacteria, and viruses in causing infections in plants and humans. Topics cover symbiotic associations like mycorrhiza, fungal structures, and specific agricultural pathogens. Practice these biology questions to master microbiology concepts for upcoming competitive examinations.
Fungal associationsPlant pathogensMicrobial structuresBacterial infections
Microbes and Plant Diseases Questions
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Albugo
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Aspergillus
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Claviceps
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Neuroapora
D
Correct answer
Explanation
Neurospora crassa is a model organism widely used in biochemical and genetic research due to its short life cycle and ease of cultivation.
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Phycomycetes
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Deuteromycetes
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Basidiomycetes
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Ascomycetes
B
Correct answer
Explanation
Deuteromycetes are known as 'fungi imperfecti' because they lack a known sexual phase in their life cycle.
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Phycomycetes
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Ascomycetes
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Basidiomycetes
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Deuteromyvetes
B
Correct answer
Explanation
Ascomycetes are commonly referred to as 'sac fungi' because their spores are produced within a sac-like structure called an ascus.
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Filament
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Mycorrhiza
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Lichen
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All
C
Correct answer
Explanation
Lichens are symbiotic associations between fungi and algae. Mycorrhiza is an association between fungi and plant roots.
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Mycelium
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Mycorrhiza
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Lichen
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All
B
Correct answer
Explanation
Mycorrhiza is the symbiotic association between fungi and the roots of higher plants. This relationship helps the plant absorb nutrients, particularly phosphorus.
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Heteroteophic
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Saprophyte
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Parasite
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All
D
Correct answer
Explanation
Fungi are heterotrophic organisms that obtain nutrients through absorption. They can be saprophytes, parasites, or symbionts, making all the listed options correct.
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Filament
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Thread
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Mycelium
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Trichome
C
Correct answer
Explanation
The body of a fungus consists of long, slender thread-like structures called hyphae. The network of these hyphae is collectively known as mycelium.
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Fungi
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Monera
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Plantae
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Animalia
A
Correct answer
Explanation
Mushrooms are macroscopic reproductive structures produced by fungi, specifically within the phyla Basidiomycota.
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plant have cell wall and fungi do not
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fungi reproduce sexually and plants do not
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Plants are autotrophs and fungi are decomposers
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Plants are tall and fungi are not
C
Correct answer
Explanation
Plants are autotrophs that produce their own food via photosynthesis, whereas fungi are heterotrophs that obtain nutrients by decomposing organic matter.
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Glomus
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Agaricus
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Alternaria
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Claviceps
A
Correct answer
Explanation
Glomus is a genus of arbuscular mycorrhizal fungi that form symbiotic relationships with plant roots.
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Histoplasma capsulatum
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Trichoderma polysporum
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Trichoderma asperellum
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Neisseria gonorrhoeae
B
Correct answer
Explanation
Cyclosporin A is an immunosuppressant drug produced by the fungus Trichoderma polysporum.
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Butyric acid
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Tartaric acid
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Citric acid
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None of the above
C
Correct answer
Explanation
Aspergillus niger is an industrial fungus used for the commercial production of citric acid.
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killing insects
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biological control of plant diseases
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controlling butterfly caterpillars
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producing antibiotics
B
Correct answer
Explanation
Trichoderma species are free-living fungi that are effective as biological control agents against several plant pathogens.
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Fungi
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Plants
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Decomposers
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Animals
B
Correct answer
Explanation
Plants are the primary example of autotrophs because they use chlorophyll to capture light energy and perform photosynthesis to create their own food.
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Mushroom
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Mould
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Penicillium
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All of these