What is the characteristic feature of the scolex in a tapeworm?

The scolex of a tapeworm is specifically designed for attachment to the host's intestinal wall. It features hooks and suckers that allow the tapeworm to securely anchor itself in place, preventing it from being expelled. This structural adaptation is crucial for the tapeworm's survival, as it relies on the host for nutrients without having a digestive system of its own. Therefore, the primary characteristic of the scolex is its function in securing the tapeworm to its host, making it essential for the tapeworm's life cycle and reproductive success. In contrast, the reproductive organs and feeding structures of the tapeworm are located in different parts of its anatomy, and locomotion is not a primary function of the scolex.