Question

what are the features of tapeworms?
parasitic, ribbon - like body, scolex with hook and suckers
parasitic, complex life cycle, protective coating, suckers to attach to host
regenerative abilities, simple body plan, shaped like an arrow

Explanation:

Tapeworms are parasitic flatworms. Their key features include being parasitic, having a ribbon - like (or segmented) body, and a scolex (head region) with hooks and suckers for attaching to the host's intestinal wall. The first option correctly lists these main features. The second option's “protective coating” is not a defining feature of tapeworms, and the third option's “shaped like an arrow” and “regenerative abilities” (not a main feature of tapeworms like it is for planarians) are incorrect.

Answer:

parasitic, ribbon - like body, scolex with hook and suckers