What is the undifferentiated mass of cells in tissue culture called?

From the following statements,select the wrong one:

Identify the figure with its correct function.

Which of the following is not a group of cryptogams (non-flowering plants)?

When iron sulfide is heated in air,a sulfur oxide $A$ is formed. When $A$ is dissolved in water,it produces an acid. What is the basicity of this acid?

Consider the following statements regarding Werner's theory of coordination compounds:
$(1)$ Ligands are connected to the metal ions by coordinate bonds (dative bonds).
$(2)$ Secondary valencies have directional properties.
$(3)$ Secondary valencies are non-ionisable.
Which of these statements are correct?