Which taxonomic group has more species in the world than the combined total of fishes, amphibians, reptiles, and mammals?

Fungi

The correct answer is Option (4)- Fungi.

More than 70 per cent of all the species recorded are animals, while plants (including algae, fungi, bryophytes, gymnosperms and angiosperms) comprise no more than 22 per cent of the total. Among animals, insects are the most species-rich taxonomic group, making up more than 70 per cent of the total. That means, out of every 10 animals on this planet, 7 are insects. The number of fungi species in the world is more than the combined total of the species of fishes, amphibians, reptiles and mammals. Fungi are found in a wide range of habitats, including soil, water, and air. They play a vital role in the environment, decomposing dead organic matter and recycling nutrients.