Asked in Premeth past paper pool — Biology

Based on the modes of nutrition, bacteria that serve the role of decomposers in the environment are categorised as

Correct answer: D. Chemoheterotrophs

  • A. Photoautotrophs
  • B. Chemoautotrophs
  • C. Photoheterotrophs
  • D. Chemoheterotrophs

Explanation

Decomposers play a crucial role in ecosystems by breaking down dead organic material and recycling nutrients. These organisms are classified as chemoheterotrophs because they obtain their energy and carbon from organic compounds, which they decompose. In contrast, photoautotrophs and chemoautotrophs derive their carbon from carbon dioxide and not from decomposing organic matter. Photoheterotrophs use light for energy but, like chemoautotrophs, are not primarily decomposers.

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About Kingdom Prokaryotae

Kingdom Prokaryotae includes bacteria and cyanobacteria, organisms with no membrane-bound nucleus or membrane-bound organelles. It covers their cell wall, capsule, flagella, plasmids, forms of nutrition, binary fission, useful and harmful roles, and the differences between prokaryotic cells and eukaryotic cells.

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