Across
- 3. resemble vertibrate lymphocytes
- 5. for respiration
- 8. mutation on what we see today
- 10. free living pelagic urochordate
- 11. the opening indentation
- 12. and mitrates, is a curious group of echinoderms known only from fossils in marine rocks dated 505 to 325 million years ago
- 13. separate gonads
- 14. also known as Hatschek’s pit
- 15. consist of screens, filters, and expanded gelatinous matrix
- 17. behavior possesses the necessary form and function before the biological role arise
- 19. secretion, sticky substance
- 22. solid mass of mesodermal cells splits to form the body cavity within them
- 23. sexual reproduction of ascidians
- 26. hydrostatic organ
- 29. mesoderm arises as outpocketings of the gut that pinch off to form the body cavity
- 30. is a part of the digestive tract located immediately posterior to the mouth
- 34. distributes the weight
- 35. sometimes divided into solutes,
- 37. literally means first mouth
- 38. " the occipital segment of the skull
- 39. nature, evolutionary events
- 40. father of taxonomy
- 41. evolves from acorn worm
- 42. have two gonads
Down
- 1. the pattern of dividing cells are alligned
- 2. bottom or burrow
- 4. begin to indenr and grows inward to form this process
- 6. hemichordata, burowing form
- 7. second mouth
- 9. cellular extention hair like
- 16. participates in locomotion
- 18. cartilagenous hollow gell like
- 20. earliest chordates
- 21. sea cucumber
- 24. is specifying general regions of an embryo
- 25. action or property of a part as it works in an organism
- 27. outer part of the multicellular embryo
- 28. tail backstrings
- 31. inner part of the multicellular embro
- 32. actual derivstion of endostyle
- 33. free floating
- 36. most often stationary attached