Question

In birds and fish, an order ends in.
A.–ales
B.–a
C.–formes
D.–idea

Answer 1

Hint:Order includes related families, exhibiting few similar characters. For example- the animal order, Carnivora, includes families like Felidae and Canidae.

Complete step by step answer:Order is the group of families having few similar characters. The number of similar characters among orders is less when compared to the genus or species level.
In birds and fishes, order mainly ends with forms.
For example- In birds the last order is Falconiformes and in fishes, it is the Seminotiformes. -ales are mainly used in orders of other organisms.
-a is a suffix used for phylum.
-idea is a suffix used for families in the animal kingdom.
So, the correct option is C.-formes.

Note: Seven main categories in the hierarchical system are as follows:
Kingdom, Phylum, Class, Order, Family, Genus, and Species.
Taxon- It is a group of organisms which may belong to any rank or category of classification.
Species- It is a group of individuals sharing a common gene pool, and can sexually reproduce among themselves.
Genus- It includes related species.
Family- It comprises the group of related genera having fewer similarities as compared to genus and species.
Class- this category includes related orders.
Phylum – Classes constitute the next higher category called phylum.
Kingdom- All animals belong to the Animal Kingdom and plants to the Plant Kingdom.
Lower taxa have more common characters among the members. As the category rank increases, the number of common characters decreases. So, from species to kingdom classification becomes more complex.