week 3.txt

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week 3.txt
2013-07-14 22:58:13

week 3
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  1. Some synapomorphies for angiosperms
    Flowers, double fertilization, and fruits.
  2. This part of the flower is called a megametophyte. It usually only has 7 cells and 8 nuclei.
  3. This part of the flower is surrounded by protective layers called integuments. And develops rapidly
  4. Pollen are known as ____ & develop inside the _____.
    Microgametophytes; anther.
  5. A pollen grain is known as a
    Mature male gametophyte.
  6. In what direction does the pollen move?
    From the anther to the stigma
  7. Define self-incompatibility
    When pollen from the same plant is rejected; under genetic control.
  8. What is the result of double fertilization?
    A 2n zygote (new sporophyte) and a 3n (triploid) cell.
  9. What does the 3n triploid cell do?
    It divides to become the nutritive tissue for the embryo. This is known as the endosperm.
  10. What exactly are fruit?
    Swollen ovaries that contain seeds
  11. Vessels and libriform fibers evolved from
  12. What are libriform fibers?
    Thick lignified walls that are dead at maturity and provide support
  13. How are angiosperms different from mangoliids, eudicos, and monocots?
    They have their carpel sealed by secretion, whereas the others are sealed by tissue connection later in developing, they are initially open.
  14. What are mangoliids?
    Trees or shrubs with net veined aromatic leaves; parts not fused and pollen grains with a signle germination furrow (monosulcate).
  15. What kind of root system do adult monocots have?
    Adventitious; roots of the seedling abort and are replaced by roots originating from stems or leaves.
  16. Another word for net-venation
  17. Monocots are usually
    Herbs, as they lack secondary growth.
  18. Eudicots are usually
    Woody or herbaceous.
  19. Grass is a
  20. What kind of pollen do magnoliids have?
    Monosulcate grains
  21. Tell me about monocots and their germination apertures
    They have monosulcate or other kinds of grains and a single aperature
  22. Tell me about eudicots and their germination apertures
    They have 3 apertures (3 pores or slits)
  23. How are flowers of eudicots vs. monocots?
    Eudicots have 4 or 5 parts per flower and monocots have groups of 3
  24. Eudicots: rosids: oak family traits
    Oak family: tree, reduced wind pollinated flowers, fruits are nuts
  25. Eudicots: rosids: rose family traits
    Showy flowers, usually fusion of stamens, petals, and sepals into a thick cup
  26. Eudicots: Rosids: bean family traits
    Many bilateral flowers, all have distinctive fruity type: legume
  27. Eudicots- asterids: tomato family (night shade family)
    Mostly herbs, important food crops, many are poisonous
  28. Eudicots- asterids: sunflower family
    Largest family of flowering plants, over 23K
  29. Monocots: grass family
    Flowers are very tiny and are wind pollinated. Extremely important food crops (corn, rice, wheat)
  30. Monocots: orchid family
    Fruidy with thousands of minute dust-like seeds that have NO ENDOSPERM, are dependent upon immediate establishment with mycorrhizal fungi in order to grow, at 25K species, they are the second largest plant family.
  31. Whats the point of a flower?
    To attract animals and help move pollen around
  32. What are pollination syndromes
    Sets of flower characteristics that are suited to certain animal pollinators.
  33. How are beetle pollinated flowers?
    They have strong odor and dull colors and are large
  34. How are flowers pollinated by flies
    Red/pink In color and smell bad/strong
  35. How are flowers pollinated by bees?
    Brightly colored with nectar guides, bilaterally symmetrical and held at an angle.
  36. How are flowers pollinated by butterflies
    They usually have long tubular shape and a landing platform.
  37. How are flowers pollinated by hummingbirds
    Red, bilaterally symmetrical, long tubular, odorless, lot of nectar
  38. How are bat-pollinated flowers
    Strong odors, lots of nectar, white dull colors
  39. Whats special about wind pollinated plants?
    They forgo color, no petals, but dangle.