Question

the largest number of identified species (other than plants) in the world belongs to which of the following? molluscs insects reptiles

Explanation:

Insects are the most diverse group of animals on Earth. They have a wide range of adaptations that allow them to occupy numerous ecological niches. Their small size, ability to fly (in many species), and high reproductive rates contribute to their success in terms of species number. Molluscs and reptiles, while diverse, do not have as many identified species as insects.

Answer:

insects