1																	2
		3											4
																			5
								6
			7
8
										9
					10
	11															12		13
14
			15																				16
			17												18
	19										20
							21
																		22
23												24

Across 3. A stiff but flexible rod of cells that runs the length of the body near the dorsal surface. 6. In the anatomy of a tunicate, what is the only chordate characteristic remaining in the adult. 8. Some Invertebrate Chordates can reproduce ______ and asexually. 9. Larval tunicates swim for a few days after hatching, then attach to a marine surface and undergo what into adult form. 10. What is the subphylum of Tunicates. 13. Sea squirts cannot move so they would be ____. 14. What is the subphylum of Lancelets. 15. Where do Invertebrate Chordates live. 17. Invertebrate Chordates include Tunicates and ______. 18. These are gill slits that are important for both feeding and respiration. 19. Is a lancelet's brain at its posterior or anterior end? 20. Lancelets were formally referred to as this. 21. What is another name for Tunicates. 22. Lancelets don't have a jaw and feed by allowing water to pass into their _____ where food particles are trapped. 23. The main characteristic of Invertebrate Chordates is that they have no _____. 24. Tunicates have a notochord and a dorsal nerve chord in the ___ ___.

Down 1. This is develops into the central nervous system structures like the brain and spinal chord. Extra hint... it is usually seen in the larvae stage of development. 2. When frightened, tunicates can squirt water from one of their what. 4. This goes beyond the end of the digestive track. 5. Invertebrate Chordates are ______, or animals with a true body cavity. 7. A thick outer covering that covers their small, saclike bodies. 11. Tunicates were considered to be directly related to ______. 12. What genus are Lancelets now classified in. 16. Tunicates are filter feeders of ______.