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NEET Questions / Botany / Biological Classification / Monera
Unlike the bacterial chromosome, plasmids typically:
Are linear DNA molecules.
Contain genes for essential metabolic processes.
Are not essential for basic cellular functions.
Replicate only during cell division.
Which of these is NOT a typical characteristic of a plasmid?
Independent replication
Circular structure
Encoding essential genes for basic cellular functions
Carrying genes for antibiotic resistance
Which primitive prokaryotes are primarily responsible for biogas production from the dung of ruminant animals?
Halophiles
Thermoacidophiles
Methanogens
Eubacteria
The rumen of ruminant animals provides a suitable environment for which type of prokaryotes involved in biogas production?
Methanogens
Cyanobacteria
Actinomycetes
Spirochetes
In the process of biogas production from ruminant dung, which microorganisms are responsible for the final conversion of and to methane ()?
Halophiles
Methanogens
Thermophiles
Acidophiles
Which of the following is NOT a characteristic of the prokaryotes involved in biogas production from ruminant dung?
Are prokaryotic
Belong to Archaebacteria
Essential for methane production
Require oxygen for survival
Which of the following is the smallest living cell, lacks a definite cell wall, is pathogenic to both plants and animals, and can survive without oxygen?
Mycoplasma
Virus
Bacteria
Fungi
Identify the organism that is characterized by the absence of a defined cell wall, the ability to cause diseases in both plants and animals, and the capacity to thrive in anaerobic conditions.
Mycoplasma
Cyanobacteria
Actinomycetes
Rickettsia
Pleuropneumonia-like organisms (PPLO) are known for their small size and lack of a cell wall. Which of the following accurately describes their pathogenicity and oxygen requirements?
Pathogenic to plants only; Requires oxygen
Pathogenic to animals only; Requires oxygen
Pathogenic to both plants and animals; Can survive without oxygen
Non-pathogenic; Requires oxygen
Which of the following characteristics is NOT associated with Mycoplasma?
Lack of a cell wall
Ability to survive without oxygen
Pathogenicity to plants and animals
Presence of a well-defined nucleus