Across
- 1. Part of the body of mollusks responsible for secretion of the shell
- 5. Feature of the body of annelids, arthropods and kinorhynchs once used to place annelids and arthropods together in the animal phylogeny
- 7. Developmental process leading to the formation of the embryonic germ layers
- 11. Animals possessing a ciliated wheel organ used to capture food particles
- 12. Physiological state in which water bears suspend their metabolism in response to adverse environmental conditions
- 15. Body cavity completely lined by mesoderm epithelia
- 16. Group of organisms including their most recent common ancestor, but not all of its descendants
- 17. Phylum that has a unique proboscis housed in a coelomic cavity called rhynchocoel
- 18. Animals in which the presence of two valves may cause confusion with bivalves, but that can be distinguished by the orientation of the valves and the presence of a pedicle
- 20. Type of cleavage present in bryozoans that used to be evidence for grouping them with deuterostomes
- 21. Invertebrates like tunicates, bryozoans and corals that share tissues between individual units
- 22. Complex structures that give the tiny Gnathifera their name (gnathos, greek for ……)
- 23. Calcareous or siliceous skeletal elements produced by sponges
Down
- 2. Hormone-regulated process by which invertebrates from a certain clade shed their cuticle
- 3. Pelagic, sexual phase of the life cycle of some cnidarians
- 4. Animals with a dorsal nervous system
- 6. Type of musculature lacking in nematodes (roundworms) and nematomorphs (gordian worms)
- 8. Most common host of the parasitic nematomorphs, which manipulate the behaviour of the host to make it jump into water
- 9. Structure that gives skeletal support to lancelets (cephalochordates) and larvae of sea squirts (tunicates)
- 10. Clade of animals that are triploblastic
- 13. Animals whose symmetry is bilateral as larvae and pentaradial as adults
- 14. Life-style of a large diversity of platyhelminthes for which many body structures and functions are specialized
- 19. Although both swim and are predators, octopuses are benthic while squids are ……
- 21. Monophyletic group