Biology Extra Credit

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Across
  1. 2. the part of a stamen that produces and contains pollen and is usually borne on a stalk
  2. 5. a slender stem that grows horizontally along the ground, giving rise to roots and aerial (vertical) branches at specialized points called nodes
  3. 7. temporary and cytoplasm-filled parts of the cell membrane that are able to change their form in order to move
  4. 10. plant vascular tissue that conveys water and dissolved minerals from the roots to the rest of the plant and also provides physical support
  5. 14. mass of scales or bracts, usually ovate in shape, containing the reproductive organs of certain nonflowering plants
  6. 18. Tiny air sacs at the end of the bronchioles
  7. 19. a mass of microspores in a seed plant appearing usually as a fine dust
  8. 21. any vascular plant that reproduces by means of an exposed seed, or ovule
  9. 23. made up of only one cell that carries out all of the functions needed by the organism
  10. 24. microscopic pores in the shoot epidermis of plants
Down
  1. 1. The pollen producing part of a flower, usually with a slender filament supporting the anther
  2. 3. a slender whiplike or threadlike strand, produced usually from the node of a stem, by which a vine or other plant may climb
  3. 4. the outer layer or part of an organism that comes in contact with the environment
  4. 6. the embryonic stage of the plant life cycle
  5. 7. plant vascular tissue that conducts foods made in the leaves during photosynthesis to all other parts of the plant
  6. 8. the small external opening of a trachea (respiratory tube) or a book lung (breathing organ with thin folds of membrane resembling book leaves)
  7. 9. the tendency toward a relatively stable equilibrium between interdependent elements, especially as maintained by physiological processes
  8. 11. microscopic cellular membrane protrusions that increase the surface area for diffusion and minimize any increase in volume
  9. 12. The process of getting back a full organism from its body part
  10. 13. a reproductive cell capable of developing into a new individual without fusion with another reproductive cell
  11. 15. a single thread or a thin flexible threadlike object, process, or appendage
  12. 16. process resulting from random motion of molecules by which there is a net flow of matter from a region of high concentration to a region of low concentration
  13. 17. a period in which a plant does not grow, awaiting necessary environmental conditions such as temperature, moisture, nutrient availability
  14. 20. a short microscopic hairlike vibrating structure found in large numbers on the surface of certain cells
  15. 22. plant structure that develops into a seed when fertilized