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← Nature & AnimalsWhich outcome occurs when high external salt concentrations inhibit stomatal closure in a coastal plant?
A)Reduced photosynthetic carbon dioxide fixation✓
B)Increased production of abscisic acid (ABA)
C)Enhanced synthesis of protective anthocyanins
D)Elevated synthesis of heat shock proteins
💡 Explanation
Reduced photosynthetic carbon dioxide fixation occurs because inhibited stomatal closure prevents optimal turgor pressure maintenance using the plasmolysis mechanism. Therefore, CO2 uptake is limited rather than ABA changes becauseturgor reduction relies here on osmotic balances.
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