With reference to the figure above, which of these are correct?

Explanation

In the given image of a tapeworm, we can see different parts of its anatomy, including proglottids, hooks, rostellum, and suckers. Let's identify these parts and their functions: Proglottids: These are the flat, rectangular segments that make up the body of the tapeworm. They contain both male and female reproductive organs, allowing the tapeworm to reproduce. In the image, proglottids are not labeled. Hooks: These are small, sharp structures present on the rostellum that help the tapeworm attach itself to the host's intestine. In the image, hooks are labeled as II. Rostellum: This is a small, knob-like structure present at the anterior end of the tapeworm. It contains hooks that help in attachment to the host. In the image, the rostellum is labeled as I. Suckers: These are circular, muscular structures present around the rostellum. They also help the tapeworm attach itself to the host's intestine. In the image, suckers are labeled as III. Now, let's analyze the given options: Option A: I and II are proglottides and hooks - This option is incorrect because I is the rostellum, not the proglottides. Option B: I and III are rostellum and suckers - This option is correct because I is indeed the rostellum, and III are the suckers. Option C: III and IV are hooks and proglottids - This option is incorrect because III are the suckers, not the hooks. Option D: II and IV are hooks and rostellum - This option is incorrect because II are the hooks, but IV is not labeled in the image, and the rostellum is labeled as I. So, the correct answer is Option B: I and III are rostellum and suckers.