Botany Ch. 32 Vocabulary (Not all terms)

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Across
  1. 2. A hollow ball of cells that forms from cleavage during embryo formation
  2. 6. Any organism that has a notochord
  3. 9. Tissues layers of an animal's embryo (2 words as one)
  4. 13. The innermost germ layer that forms the lining of organs
  5. 14. Organisms that do not have a backbone
  6. 16. A process in which cells begin to separate and form different types of cells
  7. 17. An organism that produces both female and male gametes.
  8. 18. An organism that lacks a body cavity
  9. 19. This type of circulatory system in which blood flows from the heart into an open body cavity before back to the heart
  10. 20. The intake of food
Down
  1. 1. This type of circulatory system consists of blow flowing through the body via vessels and veins
  2. 3. Body arrangement in which opposite portions of the body along the axis are identical
  3. 4. Organisms that have backbones
  4. 5. The division of the body into repeating units
  5. 7. The outer covering of an animal
  6. 8. This forms from the union of a sperm and egg into a diploid cell
  7. 10. The adapting of a cell to a particular function
  8. 11. The formation of a head due to specialization of nerve cells
  9. 12. The actual process of a sperm and egg uniting to form a zygote
  10. 15. A hard, rigid outer covering of invertebrates