Question 1

During an experiment, a group of students took equal volumes of blood from the same person containing 50 red blood cells and were suspended in salt solutions A, B, and C. After an hour the cell in each solution was counted and their sizes determined and results tabulated as shown below. Study the table and answer the questions that follow.

Solution	A	B	C
Size	Large	Normal	Small
Number	20	50	50

a). State the nature of solution

b). Account for the number of red blood cells in solution A after one hour.

c). Explain how the above physiological process facilitates the following actions in living organisms.

( i) Gaseous exchange

(ii) Osmoregulation