(a) Label W, X, Y, and Z.

(b) Which is the covering membrane of X known as?

(c) Which of them contain hydrolytic enzymes?

(d) Which one of them takes part in storage modification and packaging of various chemicals?

What will happen if

(a) Excess amount of fertilizer is added to a green lawn?

(b) Salt is added to cut pieces of raw mango.

Label X and Y.

(b) What is the function of X?

(c) What is the composition of Y?

(d) Identify the above diagram and what is its common name?

Name the phenomenon which helps fresh water unicellular organisms (e.g. Amoeba) continuously gain water in their bodies. Also, name the mechanisms by which these organisms throw out excess of water from their bodies.

(b) Give at least two examples in plants where similar phenomenon in used to gain water.

What is cell?