General science quiz - What category of animal is an octopus? #shorts

Define science in short.

Write a short note on prevention of animal diseases.

In general zoophage or the virus that infect animals dose not have

Which one of the following categories of animals, is correctly described with no single exception in it ?

Which one of the following categories of animals, is correctly described with no single exception in it ?

Cnidarians generally included the animals which are