FIGURE shows translocation of sucrose based on Pressure Flow Hypothesis. The following statements explain what causes the unloading of sucrose at cell Q EXCEPT?
A. lower osmotic pressure at cell Q compare to sieve tube
B. higher water potential at cell Q
C. higher sucrose concentration in cell P compare to cell Q
D. higher water potential in sieve tube
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Which of the following statement is true about heartbeat regulation during vigorous exercise?
A. Cardioinhibitory center is stimulated by medulla oblongata.
B. Norepinephrine is secreted to AV node at the end of parasympathetic nerve
C. Noradrenaline is secreted to SA node at the end of sympathetic nerve.
D. Acetylcholine is secreted to SA node at the end of parasympathetic nerve.
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