Differentiate between gastrovascular cavity and alimentary canal

This is a type pf behavior that animals are born with and them to survive

Consider the classification levels of a human. eukarya ,animalia ,chordata ,mammalia ,primates, hominidae ,homo ,sapiens .which is the most specific taxonomic level in the classification system above? a sapiens b homo c hominidae d primates

You see a white marker with an orange circle and black lettering. what does this marker tell you