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| 1. |
Explain the importance of roots in the process of photosynthesis and fixation of nitrogen. |
| Answer» <html><body><p><strong>Answer:</strong></p><p>Nitrogen is a critical limiting element for plant growth and production. It is a major component of chlorophyll, the most important pigment needed for photosynthesis, as well as amino acids, the key building blocks of proteins. It is also found in other important biomolecules, such as ATP and nucleic acids. Even though it is one of the most abundant elements (predominately in the form of nitrogen gas (N2) in the Earth’s atmosphere), plants can only <a href="https://interviewquestions.tuteehub.com/tag/utilize-1441854" style="font-weight:bold;" target="_blank" title="Click to know more about UTILIZE">UTILIZE</a> reduced forms of this element. Plants acquire these forms of “combined” nitrogen by: 1) the addition of ammonia and/or nitrate fertilizer (from the Haber-Bosch process) or manure to <a href="https://interviewquestions.tuteehub.com/tag/soil-15956" style="font-weight:bold;" target="_blank" title="Click to know more about SOIL">SOIL</a>, 2) the release of these <a href="https://interviewquestions.tuteehub.com/tag/compounds-927010" style="font-weight:bold;" target="_blank" title="Click to know more about COMPOUNDS">COMPOUNDS</a> during <a href="https://interviewquestions.tuteehub.com/tag/organic-1138713" style="font-weight:bold;" target="_blank" title="Click to know more about ORGANIC">ORGANIC</a> matter decomposition, 3) the conversion of <a href="https://interviewquestions.tuteehub.com/tag/atmospheric-887165" style="font-weight:bold;" target="_blank" title="Click to know more about ATMOSPHERIC">ATMOSPHERIC</a> nitrogen into the compounds by natural processes, such as lightning, and 4) biological nitrogen fixation (Vance 2001).</p></body></html> | |