Bio Final: Angiosperms (2) Mono v. Di

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  1. Number of seeds leaves
    monocots: have one seed leaf, or cotyledon; stored food is around the embryo

    dicots: has two seed leaves; or cotyledons; the cotyledons are part of the embryo; first leaves of the emrbyo; the part that goes on to produce the root and shoot is the radicle and the hypocotyl, respectively
  2. Where is the food for each?
    monocot: around the embryo, not inside the cotyledon, which absorbs the stored food 

    diciot: cotyledon
  3. Every civilization had one monocot at the basis of civilization. Explain theis.
    All grasses are monocots; and, they are usually the staple of civilizations. For example, wheat,corn, and rice.
  4. Petals
    monocots: three (multiples of)

    dicots: four or five (roses, ex.)
  5. What are some leaf arrangements?
    alternate, where the leaf attaches to the stem; the point of attachment is called the node (only one stem)

    opposite: opposite each other

    whorled: three or four
  6. A typical flower has __flower parts. What are they and what are they?
    modified leaves  (even lf they don't look leaflike)

    sepals, petals, pistils, stamens
  7. Explain the relation with stems
    the flower occurs at the end of the stem, terminating at the end of the stem. Once a flower forms at the end of the stem, it doesn't grow anymore
  8. Very tip of the stem where the flower attaches is called the __. The flower stalk itself is called the __. What happens is you have got __ as you go up the receptacle; and, what happens in relation to this.


    four rings of flower parts

    the ring of the flower parts get closer to the center of the center from outside in
  9. Explain sepalsand petals and stamens
    sepals: very leaflike

    petals: farther in and higher

    stamen: farther in and higher and has whatlookslikea stem called the filament and at the tip of that is the swollen area called the anther
  10. Explain the cross section of an anther.
    four pollen sacs where pollen is produced

    the connective is what is between the pollen sacs
  11. Center of the structure
    pistil where seeds are locaoted

    number of ovules varies

    pistil has several parts: at the top is the stigma, where pollen lands; then, the neck, which can be long or small, is the stile, and the ovary is the swollen ovary
  12. Sometimes, sepals and petals can be called __ if they look alike. 

    How can you tell them apart?

    if you look down at the flower, they are arranged in two rings; one is higher up and the other is farther down. So, you see the different levels and know that the higher and inner one is the petal
  13. A typical stamen has __. __ are hard to see sometimes.
    • anther
    • connection
    • filament

  14. What are the two varieties of pistils.
    one is a simple, which means the whole pistile is made up of oneunit called a carpel, a modified leaf

    the ovules might have been produced on the upper surface and then the whole thing closed  so the ovules were inside

    advantage: protection
  15. What is the difference of flowering plants and their ovules versus gymnosperms?
    conifers: seeds on the cone scale with no protection

    flowering: protection as they are inside
  16. Simple pistil?

    compound pistil
    one where the seed or seeds are in a single carpel

    a lot of carpels fused together and you get a compound pistil
  17. Simple pistil; what happens to the ovule?
    made up of one carpel which is a modified leaf

    whats happened is the ovule was produced on the upper surface and the whole thing closed so its on the inside

    simple pistil is one in which the seed or seeds are in a single carpel
  18. Compound pistil
    carpels fused together; three can be combined together; ovules on the inside
  19. How can you tell between simple and compound?
    IFCOMPOUNT itwill have lobes on the stigma

    also use razor blade to cutit open. in the cross section, youll be able to see individual units if compound
  20. True or False:

    Flowers can have more than one pistil.
    true; not common

    but each is simple
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Bio Final: Angiosperms (2) Mono v. Di
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