NEET Biology Kingdom Monera Question Bank

done Assertion and Reason

• question_answer1) Read the assertion and reason carefully to mark the correct option out of the options given below: Assertion : Bacteria are prokaryotic. Reason : Bacteria do not possess true nucleus and membrane bound cell organelles. [AIIMS 1996]

  A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion

  B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion

  C) If the assertion is true but the reason is false

  D) If both the assertion and reason are false

  E) If the assertion is false but reason is true

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• question_answer2) Assertion : Bacteria have three basic shapes, i.e., round, rod, spiral. Reason : Cocci and Bacilli may form clusters or chain of a definite length. [AIIMS 2000]

  A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion

  B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion

  C) If the assertion is true but the reason is false

  D) If both the assertion and reason are false

  E) If the assertion is false but reason is true

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• question_answer3) Assertion : Bacterial photosynthesis occurs by utilizing wavelength longer than 700 nm. Reason : Here reaction centre is B-890. [AIIMS 2002]

  A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion

  B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion

  C) If the assertion is true but the reason is false

  D) If both the assertion and reason are false

  E) If the assertion is false but reason is true

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• question_answer4) Assertion : The nitrogen-fixing bacteria in leguminous plant nodules live as symbionts. Reason : Leg-haemoglobin synthesized by leguminous plants protect bacteria.

  A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion

  B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion

  C) If the assertion is true but the reason is false

  D) If both the assertion and reason are false

  E) If the assertion is false but reason is true

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• question_answer5) Assertion : Bacteria are classified among plants. Reason : They have cell walls.

  A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion

  B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion

  C) If the assertion is true but the reason is false

  D) If both the assertion and reason are false

  E) If the assertion is false but reason is true

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• question_answer6) Assertion : Prokaryotic chromosome differs from a eukaryotic one by the absence of histone proteins. Reason : Bacterial cell is prokaryote.

  A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion

  B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion

  C) If the assertion is true but the reason is false

  D) If both the assertion and reason are false

  E) If the assertion is false but reason is true

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• question_answer7) Assertion : Some bacteria have the capacity to retain Gram stain after treatment with acid alcohol. Reason : They are known as Gram positive as they are attracted towards positive pole under influence of electric current.

  A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion

  B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion

  C) If the assertion is true but the reason is false

  D) If both the assertion and reason are false

  E) If the assertion is false but reason is true

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• question_answer8) Assertion : None autotrophic bacteria carry out chemosynthesis. Reason : Chemosynthetic bacteria trap the small amount of energy released from inorganic compound?s oxidation to use in the reactions that synthesize carbohydrates.

  A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion

  B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion

  C) If the assertion is true but the reason is false

  D) If both the assertion and reason are false

  E) If the assertion is false but reason is true

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• question_answer9) Assertion : Exotoxins are relased by Gram +ve bacteria causing diseases to animals. Reason : Exotoxins are proteins to whose response WBC of animals react.

  A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion

  B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion

  C) If the assertion is true but the reason is false

  D) If both the assertion and reason are false

  E) If the assertion is false but reason is true

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• question_answer10) Assertion : The bacteria cysts are produced to avoid unfavourable conditions. Reason : Bacillus anthracis and Clostridium survive for very long durations due to endospores.

  A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion

  B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion

  C) If the assertion is true but the reason is false

  D) If both the assertion and reason are false

  E) If the assertion is false but reason is true

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• question_answer11) Assertion : Broad spectrum antibiotics are produced by streptomyces. Reason : They can destroy microorganisms by inhibiting DNA replication or protein synthesis.

  A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion

  B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion

  C) If the assertion is true but the reason is false

  D) If both the assertion and reason are false

  E) If the assertion is false but reason is true

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• question_answer12) Assertion : Bacterial cell wall is characterised by having mucopolysaccharides. Reason : Acetyl muramic acid is an example of mucopolysaccharide.

  A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion

  B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion

  C) If the assertion is true but the reason is false

  D) If both the assertion and reason are false

  E) If the assertion is false but reason is true

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• question_answer13) Assertion : Root nodules in leguminous plants are inhabited by Anabaena. Reason : Leguminous plants are an example of symbiotic nitrogen fixation.

  A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion

  B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion

  C) If the assertion is true but the reason is false

  D) If both the assertion and reason are false

  E) If the assertion is false but reason is true

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• question_answer14) Assertion : Bacillus butschli is true bacterium. Reason : Its cell wall is composed of acetyl muramic acid.

  A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion

  B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion

  C) If the assertion is true but the reason is false

  D) If both the assertion and reason are false

  E) If the assertion is false but reason is true

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• question_answer15) Assertion : Plasmids are single-stranded extra chromosomal DNA. Reason : Plasmids are possessed by eukaryotic cells.

  A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion

  B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion

  C) If the assertion is true but the reason is false

  D) If both the assertion and reason are false

  E) If the assertion is false but reason is true

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• question_answer16) Assertion : E. coli is the most studied prokaryotes. Reason : E. coli is Gram +ve bacteria.

  A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion

  B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion

  C) If the assertion is true but the reason is false

  D) If both the assertion and reason are false

  E) If the assertion is false but reason is true

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• question_answer17) Assertion : Pili are motile appendages of bacteria. Reason : Pili participate in conjugation.

  A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion

  B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion

  C) If the assertion is true but the reason is false

  D) If both the assertion and reason are false

  E) If the assertion is false but reason is true

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• question_answer18) Assertion : Bacterial cell wall are not like the plant cell. Reason : Bacterial cell wall is made up of cellulose.

  A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion

  B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion

  C) If the assertion is true but the reason is false

  D) If both the assertion and reason are false

  E) If the assertion is false but reason is true

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• question_answer19) Assertion : Cell secretion does not occur in bacteria. Reason : Golgi complex is absent in bacteria.

  A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion

  B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion

  C) If the assertion is true but the reason is false

  D) If both the assertion and reason are false

  E) If the assertion is false but reason is true

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• question_answer20) Assertion : All food chains will come to stand still if bacteria disappear from earth. Reason : Bacteria are only associated with the soil fertility and hardly any role for food chains.

  A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion

  B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion

  C) If the assertion is true but the reason is false

  D) If both the assertion and reason are false

  E) If the assertion is false but reason is true

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• question_answer21) Assertion : Bacteria do not always move with the help of flagella. Reason : Flagellated bacteria employs rotary motion of flagellum when it moves.

  A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion

  B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion

  C) If the assertion is true but the reason is false

  D) If both the assertion and reason are false

  E) If the assertion is false but reason is true

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