Thick, rigid spiral bacterium:
Correct answer: C. Spirillum
- A. Spirochaete
- B. Pseudomonas
- C. Spirillum
- D. Rhizobium
Explanation
Spirillum is a type of bacterium characterized by its spiral or helical shape. Spirilla are often elongated and have a rigid structure. Spirilla can be further classified based on their mobility and the presence of flagella. Some spirilla are motile and have flagella, which allow them to move through liquid environments. Others are non-motile and do not possess flagella.
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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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