AP BIOLOGY

Detailed explanation-1: -Detailed Solution. The Correct Answer is Ticks on Dog. A parasitic relationship is a relationship between two different organisms in which one organism gains at the expense of others without killing it. An example of a parasitism relationship is that of ticks, fleas, lice or leeches on a host such as a human or a dog.

Detailed explanation-2: -Lice, fleas, and ticks are examples of parasites that live on the skin of the host, such as a dog. They are known as ectoparasites. They attach themselves to the skin of the host and feed on its blood. That can severely harm the host by causing diseases such as Lyme disease, or Rocky Mountain spotted fever.

Detailed explanation-3: -Ticks attach to your dog by inserting their mouthparts into your dog’s skin. Many ticks also produce a sticky, gluelike substance that helps them to remain attached. After attaching to your dog, ticks begin feeding on your dog’s blood. The places where ticks attach can become red and irritated.

Detailed explanation-4: -Ticks are external parasites, living by feeding on the blood of mammals, birds, and sometimes reptiles and amphibians.

Detailed explanation-5: -The tick is predator while the dog is its prey. Parasitism.