Assertion : Hydrolases are the enzymes which catalyse the hydrolysis of ester, ether, peptide, glycosidic, C-C or P-N etc., bonds.
Reason : Lyases are the enzymes catalysing the linking together of 2 compounds like joining of C-O, C-N, P-O etc. bonds.

Sure, here are the step-by-step solutions: 1. Explain that enzymes are biological catalysts that speed up chemical reactions in living organisms. 2. Define hydrolases as enzymes that catalyze the hydrolysis (breakdown by water) of various types of chemical bonds, such as ester, ether, peptide, glycosidic, $C-C$, C-halide, P-N bonds, etc. 3. Explain that hydrolases break down large molecules into smaller ones by using the hydrogen and hydroxyl groups of water molecules in a process called hydrolysis. 4. Define lyases as enzymes that cause cleavage or removal of groups from molecules without hydrolysis, or addition of groups to double bonds or removal of a group producing double bonds. 5. Provide an example of a lyase enzyme, such as histidine decarboxylase, which breaks down histidine into histamine and $C{O}_2$ without using water.