Angiosperms: Flowering plants. Characteristics of Angiosperms (Division Anthophyta. ). Presence of complete or incomplete flowers. Monocotyledonous or Dicotyledonous development. Xylem and Phloem well defined within monocot or dicot arrangements.. ID: 695068
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Angiosperms: Flowering plantsSlide2
Angiosperms: Flowering plants
Characteristics of Angiosperms (Division Anthophyta
Presence of complete or incomplete flowersMonocotyledonous or Dicotyledonous development
Xylem and Phloem well defined within monocot or dicot arrangements.Presence of herbaceous or woody stems with monocot or dicot arrangement.
Woody stems containing spring and summer wood.
Presence of a pulpy or hard fruit that contains the developing embryonic structure of sporophytic nature, which arises from the gametophyte during the alternation of generations.Slide3
Female Flowers Magnified
II. Angiosperms’ Evolutionary Timeline
Angiosperms arose during the Mesozoic era, according to the fossil record
During the disappearance of the greatest concentration of cycadeoids, angiosperms began differentiating and becoming more numerous during the end of the era.
They continued to spread and further differentiated as animal pollinators became adapted to specific angiosperm species.
D. This continued with the greater diversity of animal differentiation as it evolved simultaneously.Slide5
III. Parts of a FlowerSlide6
Parts of a Flower..(Cont.)
Petals – showy part of the flower
Sepals – green bud covering over flower
Stamen – male part of the flower
Anther – pollen headFilament – stalk that holds up the anther
Pistil - female part of the flower
Stigma – platform where pollen lands
Style – stalk that holds up the stigmaOvary – contains the ovules
Ovule – structure which develops into embryos in the form of seeds
Stamens from an Amaryllis
Female Flower PartsSlide9
More Fruits you probably didn’t suspect!
Even More Fruits!Slide12
The Stem attaches the flower and then the fruit to the branch it develops on.Slide13
Monoc0ts vs. Dicots
Flower parts in multiples of 3
Vascular bundles arranged throughout stem
One cotyledon (seed leaf)
Flower parts : Multiples of 4 or 5
Vascular bundles mostly around edge of stem
Two cotyledons (seed leaves)
How many petals here?
How many petals here?
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