Which of the following taxonomical ranks contains organisms that are least similar to one another?

Identify the odd one out for wheat ($Triticum$ $aestivum$).

Which of the following $statement(s)$ is/are not correct?
$(i)$ Genus comprises a group of related species which has more characters in common in comparison to species of other genera.
$(ii)$ Three different genera such as Solanum,Datura and Petunia are placed in the family Malvaceae.
$(iii)$ In case of plants,classes with a few similar characters are assigned to a higher category called Division.

In the taxonomic categories, which hierarchical arrangement in ascending order is correct in the case of animals?

Genus represents $ . . . . . . $.

Identify the taxonomic category that truly exists in nature among the following.