Organization, Metabolism, Responsiveness, Movements, Reproduction, Excretion, Digestion, and Respiration.
The correct answer is option A, that is, jaw or jawless fishes.
Agnatha refers to the superclass of jawless fish in the phylum Chordata, subphylum Vertebrata, comprising of both the extinct (conodonts and ostracoderms) and present (cyclostomes) species. It comprises the group of all vertebrates with jaws, that is, gnathostomes.
On the other hand, there are two categories of living fish with jaws. The Osteichthyes (the bony fish) and the Chondrichthyes (the cartilaginous fish). Both the categories of fish comprises of two pairs of lateral fins and a finned tail for impulsion in water.
Through cells on the surface of its body and also through the orifice at the top of its head
Answer:
Dogs smell a lot better than humans, because they have more complex nose structures that allow them to follow any scent
