When the entire body of a bacterium is covered by flagella, such a bacterium is called:
Correct answer: D. Peritrichous
- A. Atrichous
- B. Lophotrichous
- C. Amphitrichous
- D. Peritrichous
Explanation
Bacteria are classified based on the arrangement of their flagella, which affects their motility. Peritrichous bacteria have flagella all over their surface, enabling them to move in various directions efficiently. This is in contrast to atrichous bacteria, which lack flagella entirely and are non-motile. Lophotrichous and amphitrichous bacteria have flagella localized to specific areas, either in bundles at one end or at both ends, respectively. Thus, the correct answer is D: Peritrichous.
This question appeared on the ETEA MDCAT 2013 paper, which you can sit online with every answer explained.
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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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