science vocab words

123456789101112131415
Across
  1. 4. the lower layer of leaf tissue consisting of loosely packed cells that carry on photosynthesis and have many air spaces between them
  2. 6. a root system having one or a few main roots that are thicker and longer than the other roots of the plant
  3. 8. a vascular tissue that carries dissolved food in a plant
  4. 9. the growth of plants in response to external stimuli such as light(phototropism), gravity(gravitropism), and touch(thigmotropism)
  5. 10. the upper layer of leaf tissue that consists of tall, thin, closely packed cells that carry on the majority of photosynthesis
  6. 12. the part of a leaf between the node and blade
  7. 14. a root system having a cluster of roots that are about equal in size and lacking a taproot
  8. 15. A strand of vascular tissue (xylem and phloem) in leaves, nonwoody stems, and young plants
Down
  1. 1. a vascular tissue made of long, hollow cells that carry water and dissolved minerals upward in a plant
  2. 2. one of the cells that surround a stoma on a plant leaf and control the opening and closing of the stoma
  3. 3. a tissue that serves as a protective covering in plants
  4. 5. the release of water from plant leaves through stomata
  5. 7. in plants, a noncellular protective covering over leaves and young stems
  6. 11. openings between guard cells of a leaf that permit water vapor and gases to pass into and out of the leaf
  7. 13. region on a stem where a leaf was or is attached