Invertebrate Fun! by Tauana Cunha

Edit Answers
1234567891011121314151617181920212223
Across
  1. 1. Part of the body of mollusks responsible for secretion of the shell
  2. 5. Feature of the body of annelids, arthropods and kinorhynchs once used to place annelids and arthropods together in the animal phylogeny
  3. 7. Developmental process leading to the formation of the embryonic germ layers
  4. 11. Animals possessing a ciliated wheel organ used to capture food particles
  5. 12. Physiological state in which water bears suspend their metabolism in response to adverse environmental conditions
  6. 15. Body cavity completely lined by mesoderm epithelia
  7. 16. Group of organisms including their most recent common ancestor, but not all of its descendants
  8. 17. Phylum that has a unique proboscis housed in a coelomic cavity called rhynchocoel
  9. 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
  10. 20. Type of cleavage present in bryozoans that used to be evidence for grouping them with deuterostomes
  11. 21. Invertebrates like tunicates, bryozoans and corals that share tissues between individual units
  12. 22. Complex structures that give the tiny Gnathifera their name (gnathos, greek for ……)
  13. 23. Calcareous or siliceous skeletal elements produced by sponges
Down
  1. 2. Hormone-regulated process by which invertebrates from a certain clade shed their cuticle
  2. 3. Pelagic, sexual phase of the life cycle of some cnidarians
  3. 4. Animals with a dorsal nervous system
  4. 6. Type of musculature lacking in nematodes (roundworms) and nematomorphs (gordian worms)
  5. 8. Most common host of the parasitic nematomorphs, which manipulate the behaviour of the host to make it jump into water
  6. 9. Structure that gives skeletal support to lancelets (cephalochordates) and larvae of sea squirts (tunicates)
  7. 10. Clade of animals that are triploblastic
  8. 13. Animals whose symmetry is bilateral as larvae and pentaradial as adults
  9. 14. Life-style of a large diversity of platyhelminthes for which many body structures and functions are specialized
  10. 19. Although both swim and are predators, octopuses are benthic while squids are ……
  11. 21. Monophyletic group