$(1)$ Like chemical catalysts enzymes reduce the activation energy of bio process $\Rightarrow$ This is correct statement.
$(2)$ Enzymes are polysaccharides $\Rightarrow$ This is incorrect statement because enzymes are protein in nature
$(3)$ Enzymes are very specific for a particular reaction and substrate $\Rightarrow$ This is correct statement.
$(4)$ Enzymes are biocatalyst $\Rightarrow$ This is correct statement.
$\begin{array}{*{20}{c}}
{CHO} \\
| \\
{HCOH} \\
| \\
{HOCH} \\
| \\
{HCOH} \\
| \\
{C{H_2}OH} \\
I
\end{array}\,\,\,\,\,\,\,\,\,\,\,\,\,\,$$\begin{array}{*{20}{c}}
{CHO} \\
| \\
{HCOH} \\
| \\
{HCOH} \\
| \\
{HOCH} \\
| \\
{C{H_2}OH} \\
{II}
\end{array}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,$$\begin{array}{*{20}{c}}
{CHO} \\
| \\
{HCOH} \\
| \\
{HCOH} \\
| \\
{HCOH} \\
| \\
{C{H_2}OH} \\
{III}
\end{array}$