Chapter 2, Problem 7SA

During a growth curve of Aliivibrio fischeri, when would you expect to see the strongest bioluminescence? A) Lag phase B) Early to middle log phase C) Late log to early stationary phase D) Middle to late stationary phase

What is the production of cotton in the state of Arizona?

If you conducted a Rhizobium isolation and it was a succesful, will you have proven that it fixes nitrogen? Please give details on how you would know. What experiment could you do to demonstrate this property? Thank you

Find the common name for these organisms: Citrus_Japonica Citrus_Limon Citrus_maxima Citrus_micrantha Citrus_reticulata Citrus_sinensis Citrus_trifoliata Maclura_pomifera

Give the scientific name of a plant which came to India as a contaminant with imported wheat and causes pollen allergy.

Soil microorganisms, collectively referred to as dizotrophs, fix 90% of the inert nitrogen gas to ammonium and nitrate. There are two-main types of nitrogen-fixing bacteria: free-living (nonsymbiotic) and mutualistic (symbiotic). Describe the mutualistic relationship between Rhizobium and legumes. What is the advantage of using legumes as a cover crop in agricultural systems? A point of interest is that the nitrogenase enzyme complex is highly sensitive to oxygen. This is a major problem for free-living aerobic species such as cyanobacteria and species of the genera Azotobacter and Beiigrinckia. Describe two ways the bacteria can overcome to levels of oxygen in their cells.

Strepto-and Staphylo- are prefixes that describe: Ocell arrangement virulence spore location morphology

you have isolated a Bacillus species and would like to test its plant growth promoting abilities. other than nitrogen fixation and ACC deaminase production, discuss three other traits that you would look for and their significance in promoting plant growth.

Why do cattle avoid browsing on calotropis plants?Explain.