2.1 The External Structure of a Leaf

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Across
  1. 1. group of structures designed to function together as a unit to perform a definite job for an organism
  2. 3. structure composed of tissues that has a definite form and performs a definite function or functions within a system
  3. 5. cluster of leaves growing around the bottom of a plant
  4. 7. growth response of an organism to life
  5. 8. point where leaves grow from a plant
  6. 11. have one blade on every petiole
  7. 12. stalk that attaches a leaf to the plant stem
  8. 13. vessel in a plant that carries food and water throughout a leaf's blade
Down
  1. 1. part of a plant that is usually found above ground; manufactures flowers, fruits, and seeds from lifting leaves toward the sun
  2. 2. edge of a leaf's blade
  3. 4. have more than one blade on every petiole
  4. 6. part of the plant that is ordinarily underground,serving to anchor the plant, to absorb nutrients, and to store food
  5. 9. flat, green portion of a leaf
  6. 10. small blade on a compound leaf
  7. 11. leaf that lacks a petiole