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Rants about PLANTS

Rants about PLANTS. Parts of a Plant. Flower: seed bearing structure Leaves: photosynthetic organ that contains vascular tissue Stem: supporting structure that carries water and nutrients between the roots and leaves Roots: underground organ that absorbs water.

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Rants about PLANTS

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  1. Rants aboutPLANTS

  2. Parts of a Plant • Flower: seed bearing structure • Leaves: photosynthetic organ that contains vascular tissue • Stem: supporting structure that carries water and nutrients between the roots and leaves • Roots: underground organ that absorbs water

  3. Reproductive Parts of a Plant • Petals: brightly colored structure that attracts insects and other pollinators • Stigma: sticky portion at the top of the pistol that traps pollen • Pistol: narrow stalk that the pollen travels through • Ovary: contains egg cells, where fertilization takes place. (seed)

  4. Reproductive Parts of a Plant • Anther: makes pollen (sperm) • Stamen: provides support of anther • Sepals: encloses a bud before it opens and protects the flower while it is developing

  5. Stomata and Guard Cells • Guard Cell: specialized cell that controls the opening and closing of stomata by responding to changes in water pressure • Stoma:small pores on the underside of a leaf that regulates gas exchange: • Absorbs CO₂ in photosynthesis • Releases O₂ and H₂O in transpiration 6CO2 + 6H2O + Energy ------> C6H12O6 + 6O2

  6. Xylem and Phloem • Xylem: transport of water from roots to remainder of plant • Phloem:transport of food and nutrients from leaves to remainder of plant

  7. Geotropism or Gravitropism • The growth of plants in response to gravity • Roots grow downward, stem grows upward

  8. Phototropism • The movement of a plant towards or away from light

  9. Hydrotropism • The movement of a plant towards or away from water

  10. Thigmotropism • directional response of a plant organ to touch or physical contact with a solid object *Example: Vines growing on a trellis

  11. Other Need to Know Vocab  • Pollination: transfer of pollen from the male reproductive structure to the female reproductive structure • Growth: period of time when the plant embryo is growing • Dormancy: period of time when the plant embryo is alive, but not growing

  12. Angiosperm vs. Gymnosperm • GYMNOSPERM • cone bearing plants (seeds grow on cones) "naked seeds“ • wind pollinated • needle like leaves • Examples: pine trees & evergreens ANGIOSPERM • flowering plants • seeds are enclosed in a fruit • most are pollinated by birds & bees • Examples: grasses, tulips, oaks, dandelions • Divided into two main groups: Monocots & Dicots

  13. Two Types of Angiosperms MONOCOT DICOT Angiosperms that have 2 seed leaves (cotyledons) Net-like veins on leaves Flowers have 4-5 parts Taproots Examples: trees and ornamental flowers • Angiosperms that have 1 seed leaf (cotyledon) • Parallel veins on leaves • 3 part symmetry for flowers • Fibrous roots • Example: lilies, onions, corn, grasses, wheat

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