1
Question
The metal ion involved in stomatal regulation is
The metal ion involved in stomatal regulation is
Open in App
Solution
The correct option is D K
Guard cells are highly specialized epidermal cells that in pairs form stomatal pores in aerial organs of plants. Each pair of guard cells forms a pore through which water and CO2 exchange occurs. Guard cells modulate stomatal pore size by co-ordinating responses to environmental and physiological factors including light, temperature, Ca2+ and the plant hormone abscisic acid. These factors induce dynamic changes in the intracellular concentrations of inorganic and organic ions. Stomatal opening occurs by osmotic swelling of guard cells, caused by K+ uptake. Stomatal closure results from anion and K+release from guard cells and conversion of malate to starch. Thus, the correct answer is option D.
Guard cells are highly specialized epidermal cells that in pairs form stomatal pores in aerial organs of plants. Each pair of guard cells forms a pore through which water and CO2 exchange occurs. Guard cells modulate stomatal pore size by co-ordinating responses to environmental and physiological factors including light, temperature, Ca2+ and the plant hormone abscisic acid. These factors induce dynamic changes in the intracellular concentrations of inorganic and organic ions. Stomatal opening occurs by osmotic swelling of guard cells, caused by K+ uptake. Stomatal closure results from anion and K+release from guard cells and conversion of malate to starch.
Thus, the correct answer is option D.
Suggest Corrections
0
Similar questions
Join BYJU'S Learning Program
Explore more
Join BYJU'S Learning Program
