$A$ few drops of iodine solution were added to rice water. The solution turned blue-black in colour. This indicates that rice water contains

Name the energy currency in the living organisms. When and where is it produced?

When air is blown from the mouth into a test-tube containing lime water,the lime water turns milky due to the presence of:

Why is blood circulation in the human heart called double circulation?

The opening and closing of the stomatal pore depends upon:

During the respiration of an organism $A$,one molecule of glucose produces two $ATP$ molecules,whereas in the respiration of another organism $B$,one molecule of glucose produces $38$ $ATP$ molecules.
$(a)$ Which organism is undergoing aerobic respiration?
$(b)$ Which organism is undergoing anaerobic respiration?
$(c)$ Which type of organism,$A$ or $B$,can convert glucose into alcohol?
$(d)$ Name one organism which behaves like $A$.
$(e)$ Name two organisms which behave like $B$.