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NEET 2022 · BiologyEubacteriaPrevious Year Question

Which of the following is a correct statement?

Answer: (A) Cyanobacteria are a group of autotrophic organisms classified under Kingdom Monera.. Answer: (A) Cyanobacteria are autotrophic, classified under Kingdom Monera Solution: Cyanobacteria are prokaryotic photosynthetic autotrophs placed in Monera, so A is correct.

  1. A.Cyanobacteria are a group of autotrophic organisms classified under Kingdom Monera.✓
  2. B.Bacteria are exclusively heterotrophic organisms
  3. C.Slime moulds are saprophytic organisms classified under Kingdom Monera.
  4. D.Mycoplasma have DNA, Ribosome and cell wall

Correct Answer

(A) Cyanobacteria are a group of autotrophic organisms classified under Kingdom Monera.

Solution & Explanation

Answer: (A) Cyanobacteria are autotrophic, classified under Kingdom Monera Solution: Cyanobacteria are prokaryotic photosynthetic autotrophs placed in Monera, so A is correct. B is wrong—bacteria show extensive metabolic diversity and may be autotrophic or heterotrophic. C is wrong—slime moulds are saprophytic protists (Kingdom Protista), not Monera. D is wrong—Mycoplasma completely lack a cell wall. NCERT Reference: NCERT Class XI, Biological Classification, p.13, lines 26-28 — "cyanobacteria ... are photosynthetic autotrophs"

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