Primary metabolites | Secondary metabolites |
These are required for basic metabolic processes. | These are derivatives of primary metabolites and not required for basic metabolic processes. |
These are easily extracted from plants. | Their extraction from a plant is difficult. |
They play a wide variety of roles in a plant. | They have a limited role in a plant. |
They are found from the start of the life of a plant. | They are found during a particular period of development of the plant. |
These are found in all plants. | These are found in particular plant species. |