When the cell (or tissue) is placed in ......... solution, there is no net flow of water towards the inside or outside.

$A$ cell is placed in $0.4 \; M$ solution of sugar and no change in volume of cell is found. What is the concentration of the cell sap (in $; M$)?

If the external solution is less concentrated than the cytoplasm,it is called $P$. If the external solution is more concentrated than the cytoplasm,it is called $Q$. If the external solution balances the osmotic pressure of the cytoplasm,it is called $R$.

Osmosis is the property of

Which of these is a Semipermeable Membrane $(SP)$ and which is Selectively Permeable $(SL)$? : Parchment membrane.

An onion peel was taken and
$(a)$ placed in salt solution for five minutes.
$(b)$ after that it was placed in distilled water.
When seen under the microscope,what would be observed in $(a)$ and $(b)$?