Chapter 2, Problem 1SLA

Write T on the blank provided if the statement is correct. If it is false,underline and replace the word(s) with the word(s) that will make the statement true   ___________________ Microbial diversity is an indication of a poor fertility of the soil.___________________ Bacteria dominate the soil biomass with 103 cfu/gram soil, while fungiare most abundant in numbers.___________________ During symbiotic association between mycorrhizal fungi and host plant,fungi receive nutrients and other organic compounds from the plant and fungi provide the plantwith enhanced capabilities to transform nutrients.___________________ Substitutions in the tetrahedral and octahedral layers of the clay mineralmay leave negative charges on the edges of the mineral.___________________ The hydroxy groups on the broken bonds at the edges may give positivecharge upon ionization when the pH is alkaline.

Describe the process of soil formation for one of the following: Tundra soil, Tropical forest soil or Prairie/grassland soil. The answer should address the impact of vegetation accumulation, impact of temperature and precipitation on the formation. You should also note the soil characteristics and reasons for them in relation to your choice.

Jeff prepared a tissue culture medium containing macronutrients, micronutirnts and vitamins. He adjusted the pH of the medium to 8 and agar was added into the medium. The medium was autoclaved at 121℃ and 15 psi for 30 minutes. Comment the medium that Jeff prepared for inducing shoot formation

When the soil is acidic, plants cannot grow on it. True or False

A nurse who created a sterile field for a patient is adding a sterile solution to the field. What is an appropriate action when performing this task? a. Place the bottle cap on the table with the edges down. b. Hold the bottle inside the edge of the sterile field. c. Hold the bottle with the label side opposite the palm of the hand. d. Pour the solution from a height of 4 to 6 inches (10 to 15 cm).

Write T on the blank provided if the statement is correct. If it is false,underline and replace the word(s) with the word(s) that will make the statement true. ___________________ Potential acidity is the sum of hydrogen ions in soil solution site.___________________ Actual acidity is the sum of hydrogen ions that may contribute to solubilityof ions in the soil solution site.___________________ Ammonium sulfate is a fertilizer that strongly acidifies soil than Ureafertilizer.___________________ Ca, Mg and K have high availability at acidic pH.___________________ Fe and Al have high solubility at basic/alkaline pH.___________________ Soils containing large amounts of 2:1 type clay are less buffered than soilswith 1:1 type of clay.

Write the name of the lab specimen which is a corn ?

Assuming you are working in a microbiology laboratory and a client sent you a sample for the following analyses: Identification of all microorganisms in the soil sample Enumeration of culturable bacteria in the sample Enumeration of both culturable and non-culturable bacteria in the sample For a to c, explain the following: Method of analyses to be used  Step by step report on how the analyses will be conducted

An extremely acid soil generally limits the availability of many nutrients in the soil.  True or False