Kingdom Monera (Biology MCQs):
Ques. The decomposition of organic compounds in the presence of O2 without the development of odoriferous substance is
(a) Nitrifixation
(b) Decay
(c) Denitrifixation
(d) Nitrogen fixation
Ques. Organisms which have cells but no distinct nucleus
(a) Bacteria
(b) Cyanobacteria
(c) Both of these
(d) None of these
Ques. “Crown gall” is caused by
(a) Mycobacterium
(b) Bacteria
(c) Erwinia
(d) Clostridium
Ques. Smallest bacteria is
(a) Spirillium
(b) Bacillus
(c) Dialister
(d) None of these
Related: Centre of Mass questions
Ques. Meningitis a disease is responsible for membrane damage of the brain is caused by
(a) A fungus
(b) Bacillus
(c) Neisseria
(d) Bordetella
Ques. What are episomes?
(a) Hereditary DNA of bacterial cell
(b) Extrachromosomal hereditary material of bacteria associated with nucleoid
(c) Modification of the cell membrane performing respiration
(d) None of these
Ques. Which of the following is non-symbiotic biofertilizer?
(a) VAM
(b) Azotobacter
(c) Anabaena
(d) Rhizobium
Ques. Pili in bacteria represent
(a) Extra-chromosomal genetic element
(b) Protoplasmic outgrowths of donor cells
(c) Small flagella
(d) Special bacterial cilia
Related: Diversity of Living World Sample Paper
Ques. Which of the following is Xanthomonas related?
(a) Xanthophyceae
(b) Causing disease in Xanthium
(c) A kind of Virus
(d) Causing Citrus canker disease
Ques. In bacteria, sexual conjugation is promoted by
(a) R–factor
(b) col–factor
(c) F–factor
(d) None of these
Ques. Bacterial blight of rice is caused due to
(a) Xanthomonas oryzae
(b) Helminthosporium oryzae
(c) Pseudomonas falcatum
(d) Xanthomonas falcatum
Ques. Bacteria reproduce sexually by
(a) Endospores
(b) Transformation
(c) Conidia
(d) Exospores
Related: Optics Sample Paper (Physics)
Ques. Which of the following is osmotically inactive?
(a) Bacteria
(b) Mycoplasma
(c) Nostoc
(d) All of these
Ques. For the production of which of the following, the activity of the fungus or micro-organisms is not required
(a) Casein
(b) Panir (Cottage Cheese)
(c) Curd
(d) Wine
Ques. Blebs can be noted in
(a) Spirogyra
(b) Mycoplasma galisepticum
(c) Pseudomonas cola
(d) None of these
Ques. Retting of fibres is caused by
(a) Bacillus
(b) Clostridium
(c) Nitrobacter
(d) Rhizobium
Related: Hydrocarbons Sample Paper (Chemistry)
Ques. Mycoplasma is
(a) Gram positive
(b) Gram negative
(c) Some species are gram positive
(d) None of these
Ques. Human symbiotic bacteria help in
(a) Intake of meals
(b) Digestion of meals
(c) Excretion of digested meal
(d) None of these
Ques. Which of the following are intermediate between viruses and bacteria?
(a) Mycoplasma
(b) Spirilla
(c) Virons
(d) Voriola
Ques. Why mycoplasma is pleuomorphic?
(a) Due to absence of cell wall
(b) Due to presence of three layered cell membrane
(c) Due to the presence of sterol
(d) None of these
Ques. Nostoc may form
(a) Simple colony
(b) Compound colony
(c) Both
(d) None of these
Ques. Which of the following important features are found in blue-green algae?
(a) Abundant secretion of pectin
(b) Presence of phycocyanin – C as dominant pigment
(c) No plastids
(d) All of these
