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During biological nitrogen fixation, microbial plant symbionts uptake_________and converted it to__________?
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- Which of the following statements is/are TRUE for nitrogen fixation? A. Process is performed by nitrifying soil bacteria. B. Performed by bacteria present in the roots of all plants. C. Reduction of N2 to NH3. D. Consumes a negligible amount of ATP.Most of the abundant gas in the atmosphere is not bioavailable to plants. How does this abundant gas become bioavailable?Why is most nitrogen fertilizer added as ammonium ion?
- Which of the following organisms improves nitrogen status in legumes? Select one: a. Nitrate reductase b. Rhizobium c. Glutathione d. Mycorrhizae e. PseudomonasWhy is nitrogen fixation so energetically costly?Plant growth is most likely to be limited by the available supply of usable: a. nitrogenb. carbonc. oxygend. phosphorus
- Which of the following biofertilizer extends the root system's reach, allowing for enhanced water and nutrient absorption? Explain.a. Bio-N (Corn) [Azospirillum lipoferum and Azospirillum brasilense] b. Trichoderma [Trichoderma sp.]c. Mykovam [vesicular arbuscular mycorrhiza]Whichof the following is NOT an agent of nitrogen fixation?a.Mycorrhizal fungib.Cyanobacteria (blue-green algae)c.Bacteria associated with legume rootsd.Lightninge.Actinomycete bacteria associated with alder rootsSoil could be deficient in any of the following nutrients. If you had to supply one of these to the soil, which would be required in the smallest amount? Nitrogen 2. Potassium 3. Phosphorus 4. Sulfur 5. Iron
- Why is the Nitrogen content of Fertilizers so important?Phytoremediation is the utilization of plants in the clean up of a polluted area. Indian Mustard, Willow, Poplar Tree are plants utilized in phytoremediation. Identify and explain the pollutants each of the plants Indian Mustard, Willow, and Poplar Tree can handle.What impact might fungicides and pesticides have on detrital foodwebs? How do you think the nutrient cycles would be affected bythe use of fungicides and pesticides?