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Question:
An example for symbiotic bacteria
An example for symbiotic bacteria
Updated On: Jun 15, 2022
- Erwinia amylovora
- Rhizobium leguminosarum
- Xanthomonas campestris
- Agrobacterium tumefaciens
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The Correct Option is B
Solution and Explanation
Rhizobium leguminosarum is a small, flagellate gram-negative, aerobic, rod- shaped bacteria. It persists saprophytically in the soil until it infects a root hair or damaged epidermal cell. After infection, Rhizobium establishes a symbiotic relationship with legumes living inside the root nodules and fixes large amount of nitrogen, much of which his made available to the plant.
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Concepts Used:
Biological Classification
The process of grouping living organisms into categories is called biological classification. The most modern 5-kingdom classification was put ahead by an eminent scientist R.H.Whittaker. The five-kingdom classification is based on the criteria like cell structure, mode of nutrition, body form, and reproduction. One of the most important characteristics of this system is that it follows the evolutionary sequence of living organisms. The organisms are classified into distinct taxa or levels like Kingdom, Phylum, Division, Class, Order, Family, Genus, and Species. The 5 kingdoms are as follows:
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