10 questions
The following are microbial interactions found in soil except:
Soil-microbe
Microbe-Microbe
Microbe-Plant
Microbe-Air
Microbes are most abundant at the:
Rhizoplane
Inside roots
Rhizosphere
Bulk soil
The following are microbes critical for N-fixation except:
Rhizobium
Azospirillum
Azotobacter
Mycorrhiza
Microbes as biofertilizers help in:
Improved tolerance to stress
Nutrient uptake
Faster plant establishment
All
The zone of soil that is most influenced by roots is called the
mycorrhizosphere
rhizosphere
mycorrhiza
porosphere
rhizomorph
Which of the following relationships identifies a situation in which two species share a requirement for a limited resource thus reducing the fitness of one or both species? A
Parasitism
Competition
Decomposition
Mutualism
Within the rhizosphere, plant roots have no effect on composition and density of soil microbial community.
True
False
Can't say
May be
Rhizobia infect the host legumes through:
Cortex cells
Epidermal cells
Root hairs
All of the above
Biofertilizer is a:
Mixture of organic matter and microorganism
Culture having the desired strain of microorganisms
Mixture of inorganic fertilizer and microorganism
Decomposed compost enriched with mineral solubilising bacteria