Crop Production Test #2

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Crop Production Test #2
2013-03-26 19:53:27
Agronomy 105 Lecture

Lecture Test #2
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  1. Morphology defined is?
    study of the physical characteristics of an organism
  2. What are the seven major plant parts?
    • 1.Roots
    • 2. Stem
    • 3. Leaves
    • 4.Inflorescence 
    • 5. Flower
    • 6. Fruit
    • 7.Seed
  3. What is the four main functions of roots?
    • Anchorage
    • Absorption
    • Storage
    • Conduction
  4. What is the embryonic root called? (aka the primary root)
  5. Tap roots are found in what kind of plant?
  6. Fibrous roots are found in what?
  7. T of F: Fibrous roots have no single dominant root
  8. Fibrous roots typically remain _________ in term of the location?
    close to the surface of the soil
  9. What are root hairs?
    Extensions of the root epidermal cells, single cell's of the roots outer layer, site of all water and nutrient uptake
  10. Mycorrihizae is?
    The relationship between plant roots and soil inhabiting microorganisms
  11. What is mutualistic symbiosis?
    Where both parties are benefited from the relationship
  12. What is an adventitious root?
    Roots formed from non-root parts
  13. What is an example of an adventitious root?
    Prop Roots; typically in growing monocots
  14. Roots also act as _________ organs.
  15. What are some examples of roots as storage organs?
    Sweet potato, carrot, radish
  16. Stem defined is?
    An elongated axis on which the lateral appendages are attached
  17. What are the four stem functions?
    • support- leaves, flower, fruit
    • Conduction- water, minerals, food
    • Sight of New growth
    • Storage - food and water
  18. What is the node?
    The point of attachment of buds and appendages in dicots
  19. Internode
    Portion of stem between nodes
  20. The growing point of dicots?
    is the shoot, turns into leaves or flowers
  21. What are the two bud types in dicots?
    Terminal Bud, Axillary Bud
  22. What is the function of buds in dicots?
    • Responsible for initial growth and elongation of shoot, gives rise to major components:
    • a)stem
    • b)leaves
    • c)reproductive organs
  23. Xylem transports?
    Upwardly, water and minerals
  24. Phloem transports?
    Both up and down, food conduction
  25. Vascular bundles in dicots are arrranged?
    In rings toward the outer layer of the stem
  26. As a dicot grows if it produces a secondary xylem it is known as a?
    Woody Dicot
  27. In a dicot if it does not procuse a secondary xylem it is known as?
    Herbacious Dicot
  28. In monocots the stem is known as the?
  29. Vascular bundles in monocots?
    scattered throughout, doesn't produce secondary xylem
  30. What is the growing point of monocots?
    The crown, located at ground level
  31. What is a rhizome?
    A horizontal underground stem
  32. What is an example of a rhizome?
    Johnson Grass
  33. What is a stolon?
    A horizontal above ground stem
  34. What is an example of a stolon?
  35. What is a tiller?
    vertically growing stem
  36. What is a tuber?
    • The elongated terminal portion of a rhizome
    • Ex: Potatoes
  37. What is a tendril?
    • Slender coiling stem structure that are sensitive to contact
    • Ex: Ivy
  38. What are the four main functions of the leaves?
    • Photosynthesis- Sunlight Absorption
    • Transpiration
    • Conduction
    • Storage
  39. What are the four parts of the monocot leaf?
    • Leaf blade-site of photosynthesis
    • Leaf sheath - wraps around culm
    • Ligule - point of attachment between blade and sheath
    • Auricle - project from sheath
  40. What are the three parts of a dicot leaf?
    • Leaf blade - site of photosynthesis
    • Petiole - stalk on which blade attaches to stem
    • Stipules - Stem like outgrowths at the base of petiole
  41. What is the flowers functions?
    • Reproductive structures
    • Attract Pollinators
  42. What is the Calyx?
    collective term for the sepals
  43. What are the sepals?
    Encloses the outer parts of the flower
  44. What is the corolla
    Collective term for the petals
  45. What is the stamen?
    The male parts
  46. What parts are included in the stamen?
    • Anther - site of pollen production
    • Filament - supports anther
  47. What is the pistil (carpel)?
    The female parts
  48. What parts are included in the pistil?
    • Ovary - contains the ovule
    • Stigma - Site of pollen inception
    • Style- Supports the stigma
  49. What is an inflorescence?
    Flower bearing branch, or "seed head"
  50. What is a spikelet?
    Basic unit of an inflorescence
  51. What are the three types of inflorescence?
    • Spiked -attached directly
    • Raceme - spikelet attached to short stalk
    • Panicle - central axis branched
  52. What are the glumes?
    Envelope the spikelet and serve as protection
  53. What are florets?
    Individual flower within the spikelet
  54. What are the two types of bracts?
    Palea and Lemma
  55. What is the tip that extends out on the Lemma called?
    Awn or Beard
  56. What are complete flowers?
    Contain all four main parts; corolla, calyx, pistil, stamen
  57. What is an incomplete flower?
    Is missing at least on of the four main parts
  58. What is a perfect flower?
    Both pistil and stamen are located on the same flower
  59. What is an imperfect flower?
    Missing either stamen or pistil
  60. What is a monoecious plant?
    Plant with both sexes
  61. What is a diecious plant?
    Plant with only one sex
  62. What is a fruit?
    A ripened ovary
  63. What is the pericarp?
    ovary wall
  64. What are the three layers of the pericarp?
    Exocarp, Mesocarp, Endocarp
  65. What is a berry and give an example.
    Fleshy endocarp, peach or banana
  66. What is a dried fruit and give an example.
    pericarp layers are indistinguishable, nuts
  67. What is a caryopsis?
    grass fruit, pericarp is fused with seed
  68. What is a seed?
    Fertilized ovule
  69. What is a seed composed of?
    embryo , cotelydon, and/or endosperm
  70. What is a dicot seed composed of?
    Testa, Cotelydons, Embryo
  71. What is the testa?
    Seed coat
  72. What are the cotelydons?
    Seed leaves, provides energy
  73. What is the radicle?
    Embryonic root
  74. What is the hypocotyl?
    Stem below cotelydons
  75. What is the epicotyl?
    Stem above the cotelydons
  76. What is the hilum?
    Point of attachment of seed to ovule
  77. In  monocot seeds, caryopsis, what is the energy storage material?
  78. What is the scutellum?
    The single cotelydon, in monocot
  79. What is the pumule?
    Embryonic Shoot
  80. What is the Radicle?
    Embryonic root