The diagram above is an illustration of a dicot leaf. Study it and answer the question below.

The part that contains the phloem and xylem is labelled 

The functions of vacuoles in plants are storage and 

Four cells each with osmotic potential of about 3% salt solution was immersed respectively into solutions of different concentrations as follows:

I - 1% salt solution; II - 3% salt solution; III - 6% salt solutuon; IV - 10% salt solution.

Which of the solutions will cause an increase in osmotic pressure within the cell?

Four cells each with osmotic potential of about 3% salt solution was immersed respectively into solutions of different concentrations as follows:

I - 1% salt solution; II - 3% salt solution; III - 6% salt solutuon; IV - 10% salt solution.

If the cells are plant cells, what would happen to the cell in solution III? It would become 

How many molecules of oxygen are required for the aerobic respiration of three molecules of glucose?