Question

Why cockroach and spider are not place in the same class

Answer 1

Explanation:

Cockroach and spider are not placed in the same class because cockroach is a insect and it has 6 legs and 3 body parts which are : Thorax, Abdomen and head.

Spider is an arachnid and has 8 legs and two body parts. Both cockroach and spider are arthropods because of the absence of internal skeleton in their body.