Explain the importance of roots in the process of photosynthesis and nitrogen fixation in plants.
Answers
Answer: Roots play a role in photosynthesis by absorbing water molecules which is one of the essential elements for photosynthesis along with sunlight and carbon dioxide. Roots also absorb minerals which help to activate the rate of photosynthesis.
Explanation:
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 utilize 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 soil, 2) the release of these compounds during organic matter decomposition, 3) the conversion of atmospheric nitrogen into the compounds by natural processes, such as lightning, and 4) biological nitrogen fixation (Vance 2001).
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Roots play a role in photosynthesis by absorbing water molecules which is one of the essential elements for photosynthesis along with sunlight and carbon dioxide. Roots also absorb minerals which help to activate the rate of photosynthesis.
Root nodules apparently have evolved three times within the Fabaceae but are rare outside that family. The propensity of these plants to develop root nodules seems to relate to their root structure. In particular, a tendency to develop lateral roots in response to abscisic acid may enable the later evolution of root nodules.
Approximately 80% of Earth’s atmosphere is nitrogen gas (N2). Unfortunately, N2 is unusable by most living organisms. Plants, animals, and microorganisms can die of nitrogen deficiency, surrounded by N2 they cannot use. All organisms use the ammonia (NH3) form of nitrogen to manufacture amino acids, proteins, nucleic acids, and other nitrogen-containing components necessary for life.
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