Diversity of Flowering Plants: Angiosperms
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Diversity of Flowering Plants: Angiosperms. Largest phylum in the plant kingdom . Flowers allow for efficient pollination. Wind Animals feed on pollen or nectar Pollen is spread from plant to plant in this process. Fruit allows for efficient seed dispersal. .

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Diversity of Flowering Plants: Angiosperms

Largest phylum in the plant kingdom


Flowers allow for efficient pollination.

Wind

Animals feed on pollen or nectar

Pollen is spread from plant to plant in this process


Fruit allows for efficient seed dispersal.

  • Fruit is flower’s ripened ovary

  • Surrounds and protects seed(s)

    • Inside the seed is a plant embryo and endosperm (food for the embryo)

  • Many forms, but each function in seed dispersal

Fruit seeds in fox droppings


Seed types
Seed Types:

Based on the number of cotyledons, which is an embryonic “seed leaf” (this is like the first sprout from the seed)

Way to classify plants


  • Monocots have a single seed leaf

    • Leaf veins usually parallel

    • Flower parts usually in multiples of 3

    • Bundles of vascular tissue scattered in stem


Dicots have two seed leaves

  • Leaf veins usually netlike

  • Flower parts usually in multiples of 4 or 5

  • Bundles of vascular tissue in rings in stem



Flowering plants are also categorized by stem type and lifespan
Flowering plants are also categorized by stem type and lifespan

Stem type can be woody or herbaceous.

Wood is a fibrousmaterial made up ofdead cells.

Wood has highconcentrations oflignin and cellulose.

Woody stemsare stiff.

Oak

  • Herbaceous plants do not produce wood.

Iris


There are three types of plant life spans lifespan

  • Annuals mature from seed, flower, and die in one year.

  • Biennials take two years to complete life cycle.

  • Perennials live more than two years.

Wheat

Foxglove

Big bluestem


Flowers
Flowers lifespan

  • Reproductive structure of flowering plants

  • Sepals

    • outer ring of leaves

    • protection

  • Petals

    • Inner ring of leaves

    • Brightly colored to attract pollinators

  • Open petals & sepals reveal male and female structures


Flowers1
Flowers lifespan

  • Female Carpel

    • Inner most part

    • Ovary: within the base (female gametophyte)

    • Style: long stalk

    • Stigma: sticky tip, collects pollen

  • Male Stamen

    • Surrounds carpel

    • Filaments: long stalks

    • Anther: produces pollen (male gametophyte)


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