| AVES | Class of vertebrates whose farmland examples include the corn bunting (4) |
| FILMNOIR | Hollywood genre whose examples include The Third Man and Double Indemnity (4,4) |
| DORIC | Order of classical Greek architecture whose famous examples include the Parthenon in Athens (5) |
| FISH | Either of a pair of vertebrates represented in the Pisces symbol (4) |
| BONE | Hard tissue making up the skeleton of vertebrates |
| CASTAWAY | Any one of the "shipwrecked" guests on BBC Radio 4's Desert island Discs whose past examples include Princess Margaret and Sir David Attenborough (8) |
| POLYAMIDE | Class of chiefly synthetic polymers whose well-known examples include nylon and Kevlar (9) |
| MAMMAL | Class of vertebrates which suckle young (6) |
| AMPHIBIA | Class of vertebrates that includes frogs, toads, newts and salamanders (8) |
| HEART | Muscular organ in vertebrates whose contractions propel the blood through the circulatory system |
| REPTILIA | Class of vertebrates (8) |
| ANS | The part of the nervous system of vertebrates that controls involuntary actions of the smooth muscle |
| CEREBRUM | The anterior portion of the brain of vertebrates, also called the telencephalon |
| ECOLI | Genus of rod-shaped bacteria occurring naturally in the intestines of vertebrates (4,4) |
| MULCH | Organic matter with a number of uses in the garden, examples include decaying leaves, wood chips, straw, manure and grass clippings (5) |
| CAVEART | Examples include Paleolithic paintings dating back over 30,000 years (4,3) |
| MAMMALS | Group of some 4,000 species of vertebrates ranging in size from the pygmy shrew to the blue whale (7) |
| TAPEWORM | Parasitic ribbon-like flatworm the adult of which inhabits the intestines of vertebrates (8) |
| SKULL | The bony skeleton of the head of vertebrates (5) |
| PLATELET | Minute particle also called a thrombocyte crucial to the clotting of the blood of vertebrates |
