Some sample questions from this category:
* Of the following types of worms, which are the most common?
* Which sea is home to the Hermodice carunculata (bearded fireworm)?
* Let's start with the most well-known species of worm: the earthworm. Earthworms have an enlarged segment in their body, usually around the center. What is this segment called?
* Another type of worm is the leech. Leeches are said to suck blood from humans. This is true for some species, but not all. Many don't suck blood at all. Instead, which of these other diets might a leech eat?
* Each of these species is the same worm, just with a different name, except for one. Your job is to figure out which worm is the odd worm out.