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Habit

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Habit Make a list of families in which all members are herbaceous. Make a list of families in which all members are woody. Which families contain members that are ... – PowerPoint PPT presentation

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Title: Habit


1
Habit
  • Make a list of families in which all members are
    herbaceous.
  • Make a list of families in which all members are
    woody.
  • Which families contain members that are
    succulent?

2
Root and stem diversity
  • Describe different types of roots and stems we
    have observed this semester.
  • List the families where these can be found. Give
    examples of economically important roots and
    stems.

3
Leaf diversity (1 of 2)
  • Make sure you can find the node, petiole, and
    stipules (if present) associated with a leaf.
  • What terms are used to describe variation in the
    shape, apices, bases, and margins of the lamina
    and in attachment of the lamina to the shoot?
  • Make sure you can identify parallel vs.
    reticulate venation as well as pinnate and
    palmate venation. Where could you find examples
    of these?

4
Leaf diversity (2 of 2)
  • Make sure you know the terms to describe the
    arrangement of leaves on the shoot (opposite,
    alternate, etc.). Make a list of families with
    opposite leaves.
  • Describe all of the complexity and modifications
    in leaves that you can recall, and where these
    were found in the plant kingdom. Examples
    compound leaves, tendrils, spines, pseudobulbs,
    sheathing stipules, plicate leaves.

5
Indumentum
  • Describe the diversity we observed in hairs and
    the families where these features can be found.
    Examples stellate indumentum, hygroscopic hairs.

6
Inflorescences
  • Make sure you can identify and describe or draw
    all the major inflorescence types solitary
    terminal and solitary axillary, spike, raceme,
    panicle, simple and compound umbels, head,
    dichasial and scorpioid cymes. Also special
    terminology associated with inflorescences such
    as spathe and spadix. Where could you find
    examples of all of these?

7
Perianth
  • Make lists of families with many perianth parts,
    tri-merous, four-merous, and five-merous
    perianths. Are there any families that lack a
    perianth? What are tepals? Where would you find
    an example of tepals?
  • What is a hypanthium and which subclass (-es)
    includes families with hypanthia?
  • Make a list of families with sympetalous
    corollas.
  • Make a list of families with zygomorphic flowers.

8
Androecium
  • Which family (-ies) has/have stamens opposite the
    petals?
  • Which family (-ies) has/have epipetalous stamens?
  • Draw examples of mono-, and diadelphous stamens.
    Where can you find these? Draw tetradynamous
    stamens. Where can you find these?
  • What are and where can you find connivent
    anthers?
  • Where can you find anthers that dehisce by pores?
  • What are and where can you find pollinia?
  • What is protandry?

9
Gynoecium (1 of 2)
  • Make sure you can distinguish between pistil,
    ovary, carpel, locule, ovule.
  • Make a list of families that consistently have
    one carpel. Make lists for two, three, five, or
    many carpels.
  • Make a list of families with syncarpous gynoecia.
  • What is a stylopodium and where would you find
    one?
  • Where would you find a forked style?

10
Gynoecium (2 of 2)
  • Make a list of families with inferior ovaries.
  • Make sure you can draw all the different types of
    placentation (in cross section) and name the
    families where the different types are found.
  • Where and what is the angiosperm megagametophyte?

11
Fruits
  • Which families did NOT have fruits? Why not?!
  • Make sure you can ID all the different fruit
    types covered (including special terminology such
    as accessory, aggregate, and multiple fruits).
    You should be able to infer whether the ovary was
    superior vs. inferior, apocarpous vs. syncarpous,
    etc. from observing fruits.
  • Which fruit types are characteristic for a
    particular family?

12
Subclasses
  • Each lab (with the exception of the last) was
    organized to represent the various subclasses of
    angiosperms. Make a list of the families covered
    in each of the subclasses, and then list the
    characters that tie them together (see W K for
    guidance).

13
Taxonomists Beware!
  • This is a quick list of family pairs that we
    think are easily confused with each other.
    Perhaps you can think of others. Make a chart
    comparing the distinguishing features of these
    family pairs.
  • Cycadaceae and Arecaceae
  • Piperaceae and Araceae
  • Scrophulariaceae and Lamiaceae
  • Cyperaceae and Poaceae
  • Cupressaceae and Pinaceae
  • Iridaceae and Liliaceae

14
Quick Non-Angiosperm Review(ferns and
gymnosperms) (1 of 2)
  • Know the reproductive parts and where they are
    located on the plant.
  • Be able to identify a leptosporangium and
    eusporangium.
  • Using appropriate terminology, describe the
    different types of sori. Where would you find
    examples of these? Make sure can identify and
    know the difference between a true indusium and
    false indusium.

15
Quick Non-Angiosperm Review(ferns and
gymnosperms) (2 of 2)
  • Be able to identify and use appropriate
    terminology to describe the various leaf types,
    and shoot types (e.g. long vs. short).
  • What are the differences between a cycad cone
    and a pine cone? Are they bisexual or unisexual?
    Are they monoecious or dioecious?
  • Why do gymnosperms have naked seeds? Which
    angiosperm organ is missing?

16
Economics (1 of 2)
  • Where appropriate, list the economically
    important products derived for a particular
    family.
  • Where appropriate, list the important cultivated
    members for a particular family.

17
Economics (2 of 2)
  • Try to write some questions of your own such as
  • Which family (-ies) is/are an important tourist
    attraction in Ithaca during autumn?
  • Which family (-ies) would you use to build
    shelter if you lived in the tropics? Does this
    differ from North America?
  • Which families have humans developed important
    medicines from (these are usually the very
    poisonous families as well!)?
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