The correct option is B
See AlsoThe Extreme Hydrothermal Vent WormBacterial-Fungal Interactions: Hyphens between Agricultural, Clinical, Environmental, and Food MicrobiologistsPompeii worm • MBARIThe earthworm—Verminephrobacter symbiosis: an emerging experimental system to study extracellular symbiosisRhizobium leguminosarum
The correct option is B.
See AlsoMicrobe of the MonthExplanation of the correct option:
- Symbiotic bacteria are bacteria that live in a symbiotic relationship with other organisms.
- Like rhizobium bacteria associated with root nodules, both the host and the pathogen benefit from the symbiotic interaction.
- Plants provide a safe haven for rhizobium bacteria, which assists plants in nitrogen fixation.
- Rhizobium bacteria dwell in nodules or on the roots of legumes in the soil.
- They create a symbiotic relationship with the legume in the root nodule and benefit from the plant's nutrients.
- As a result, nitrogen is produced for the process of nitrogen fixation, also known as biological nitrogen-fixing.
Explanation of the incorrect options:
Option A:
- Erwinia amylovora is a bacteria that was first discovered to be a plant pathogen.
- It is the cause of fire blight.
- Fire blight is an apple and pear disease that can be found in various places of the world.
Option C:
- By darkening the blood vascular tissue of crucifers, Xanthom*onas campestris causes black rot.
- It's a rod-shaped, aerobic, gram-negative bacteria. About 20 different types of plants, including crops and wild plants, have been identified as having unique pathogenicity.
Option D:
- Crown gall disease is caused by Agrobacterium tumefaciens, which is found in over 140 species of eudicots.
- It's also a rod-shaped gram-negative soil bacteria.
Final answer: An example of symbiotic bacteria is Rhizobium leguminosarum.
The correct option is B
Rhizobium leguminosarum
The correct option is B.
Explanation of the correct option:
- Symbiotic bacteria are bacteria that live in a symbiotic relationship with other organisms.
- Like rhizobium bacteria associated with root nodules, both the host and the pathogen benefit from the symbiotic interaction.
- Plants provide a safe haven for rhizobium bacteria, which assists plants in nitrogen fixation.
- Rhizobium bacteria dwell in nodules or on the roots of legumes in the soil.
- They create a symbiotic relationship with the legume in the root nodule and benefit from the plant's nutrients.
- As a result, nitrogen is produced for the process of nitrogen fixation, also known as biological nitrogen-fixing.
Explanation of the incorrect options:
Option A:
- Erwinia amylovora is a bacteria that was first discovered to be a plant pathogen.
- It is the cause of fire blight.
- Fire blight is an apple and pear disease that can be found in various places of the world.
Option C:
- By darkening the blood vascular tissue of crucifers, Xanthom*onas campestris causes black rot.
- It's a rod-shaped, aerobic, gram-negative bacteria. About 20 different types of plants, including crops and wild plants, have been identified as having unique pathogenicity.
Option D:
- Crown gall disease is caused by Agrobacterium tumefaciens, which is found in over 140 species of eudicots.
- It's also a rod-shaped gram-negative soil bacteria.
Final answer: An example of symbiotic bacteria is Rhizobium leguminosarum.