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Parts of a Seedling

Parts of a Seedling. Lima beans. Lima beans have been cultivated in Peru for more than 7,000 years, its name "Lima," comes from the capital of the South American country of Peru. Historians are unsure whether they originated there or in Guatemala.

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Parts of a Seedling

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  1. Parts of a Seedling

  2. Lima beans Lima beans have been cultivated in Peru for more than 7,000 years, its name "Lima," comes from the capital of the South American country of Peru. Historians are unsure whether they originated there or in Guatemala. The scientific name for lima beans is Phaseoluslunatus.
  3. Why do seeds dry up, stay in their seed shape and not fall apart? Discuss with your partner- QUIETLY! Dry Lima Bean
  4. observe and write down differences between the dry and wet seeds. Dry Wet
  5. Draw and record what you see. Use your magnifying glass. Print – no cursive Pencil only Draw EXACTLY what you see Be NEAT and DETAILED Use map pencils only to color Spell correctly Give your drawing a title Label lines: straight and parallel to top of page
  6. Look at the exterior of the dry and soaked bean seed. Draw what you see. Measure it. Weigh it. Use your hand lens! Details! Dry Lima Bean Seed Soaked Lima Bean Seed Label the cotyledon, embryo (if you see one), hilum and micropyle.
  7. Look at the exterior of the dry and soaked bean seed. Draw what you see. Measure it. Dry Lima Bean Seed Soaked Lima Bean Seed 2.9 cm (example) 1.9 cm (example) Label the cotyledon, embryo (if you see one), hilum and micropyle.
  8. micropyle - the small pore in a seed that that allows water absorption hilum - the scar on a seed coat at the location where it was attached to the plant's stalk during development
  9. cotyledon micropyle hilum Soaked Lima Bean Seed Dry Lima Bean Seed 2.9 cm (example) embryo 1.9 cm (example) Label the cotyledon, embryo (if you see one), hilum and micropyle.
  10. Carefully remove the testa(seed coat). Try not to separate the cotyledons or let the embryo fall out. Cotyledon Embryo
  11. Carefully, slide your fingernails into the seam on the convex (rounded) side of the seam and separate the two large COTYLEDONS. You should be able to see the tiny plant embryo and its parts- the EPICOTYL, HYPOCOTYL, PLUMULE, and RADICLE. Cotyledon Embryo
  12. Inside of a Lima Bean Hypocotyl (embryonic stem) (embryonic shoot) (embryonic root) (seed coat)
  13. Use a magnifying lens to locate and observe the embryo inside the seed. Look for: the two cotyledons, the embryonic shoot (plumule), the embryonic root (radicle), the embryonic stem (hypocotyl).
  14. Lima Bean Seed Drawings Make sure you include the following: Seed Coat (Testa) Cotyledon Embryonic Root (Radicle) Embryonic shoot (Plumule) embryonic stem (hypocotyl)
  15. Cotyledon Embryonic Root (Radicle) Embryonic stem (hypocotyl) Embryonic shoot (Plumule) Inside a Lima Bean Seed Cotyledon
  16. Lima Bean Seed Drawings Cotyledons Embryonic Root (Radicle) Embryonic stem (hypocotyl) Embryonic shoot (Plumule) Testa (seed coat)
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