Why is Balanoglossus called a connnecting link between echinodermates and chordates.

Explanation

**Step-by-Step Solution:**

1. **Understanding Balanoglossus**: Balanoglossus is an organism classified under the phylum Hemichordata. It exhibits characteristics that are intermediate between echinoderms (like starfish and sea urchins) and chordates (like mammals, birds, and fish).

2. **Defining a Connecting Link**: A connecting link refers to an organism that possesses traits from two different taxonomic groups, thereby providing insight into evolutionary pathways. In this case, Balanoglossus serves as a link between echinoderms and chordates.

3. **Echinoderm Traits**: Balanoglossus displays certain features typical of echinoderms. These include:
- **Pharyngeal Gill Slits**: Similar to echinoderms, Balanoglossus has gill slits which are indicative of its evolutionary connection to this group.
...