Osmotic potential and water potential of pure water are respectively:
1.  0 and 0
2.  0 and 1
3.  100 and 0
4.  100 and 100

When water moves through a semipermeable membrane then which of the following pressure develops:
1.  O.P.
2.  S.P.
3.  T.P.
4.  W.P.