Invertebrates are animals that lack a vertebral column, or backbone.
Invertebrates among the invertebrates, the largest number of species are insects.
Insects are animals that lack a vertebral column, or backbone.
What animals lack vertebral column or backbone?
Options:
(1) snakes
(2) dogs
(3) parasites
(4) epidermal
(5) Wasps
(6) fish
(7) insects
(8) sharks