Triticum aestivum is the scientific name of wheat. Triticum is the genus name while aestivum is the species name.
Pisces is the class to which fishes belong.
Man belongs to order primate and family hominidae.
Mango belongs to class dicotyledonae and order sapindales.
The following table represents the hierarchical; classification of the given organisms:
| Common names | Scientific names | Genera | Families | Orders | Classes | Phyla/Division |
| Man | Homo sapiens | Homo | Hominidae | Primate | Mammalia | Chordata |
| Mango | Mangifera indica | Mangifera | Anacardiaceae | Sapindales | Dicotyledons | Angiospermae |
| Wheat | Triticum aestivum | Triticum | Poaceae | Poales | Monocotyledons | Angiospermae |
| Fishes | | | | | Pisces | chordata |
Thus, the correct answer is option A.