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Nature & Animals

Which consequence results when rising average air temperature reduces rubisco specificity for carbon dioxide?

A)Increased photorespiration rate in plants
B)Enhanced nitrogen fixation within root nodules
C)Elevation decreased osmotic water transport
D)Decline accelerated cuticular wax production

💡 Explanation

When temperature increases, rubisco's affinity for O2 relative to CO2 increases as enzymatic thermal motion rises due to thermal expansion, promoting photorespiration. Therefore increased photorespiration results, rather than influencing nitrogen fixation, water transport, or wax production, because these depend on reactions unrelated to rubisco's primary carbon-fixing functions.

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