Diversity in Living Organisms

In taxonomic hierarchy, family comes between

Five kingdom classification was given by

Well-defined nucleus is absent in

The 'Origin of Species' is written by

Meena and Hari observed an animal in their garden.
Hari called it an insect while Meena said it was an
earthworm. Choose the character from the following
which confirms that it is an insect.

Differentiation in segmental fashion occurs in