When guard cells close stomata at night which acid prevents uptake of K+ and C– ions?
A. Abscissic acid
B. Pyruvic acid
C. Malic acid
D. Acetic acid
Answer:A
When guard cells close stomata at night which acid prevents uptake of K+ and C– ions?
A. Abscissic acid B. Pyruvic acid C. Malic acid D. Acetic acid