The formal system for classifying and naming organisms was developed by The formal system for classifying and naming organisms was developed by Aristotle. Louis Pasteur. Carolus Linnaeus. Ignaz Semmelweis. Robert Koch.

Carolus Linnaeus

Explanation:

The formal system of classification was introduced by a Swiss scientist named Carolus Linnaeus.

He first split living things into a general category called KINGDOM.

- The kingdom is further split into large smaller groups called PHYLUM (for animals) and DIVISION (for plants).

- Each phylum or division is broken down into CLASSES.

- Each class is broken down into ORDERS

- Orders into FAMILIES,

- Families into GENUS

- Genus into SPECIES

Thus, the linnaean system of classification from highest (most general category) to the lowest level is as follows: Kingdom --> phylum/division --> class --> order --> family --> genus --> species.

b a mature ovary of a plant.

c.           is the correct answer