Angiosperm
Angiosperms, or otherwise known as flowers, are located all over the world, there are a variety of different shapes and sizes! There is two classes of angiosperms: Monocotyledonae and Dicotyledonae. Angiosperms reproduce sexually via pollination, their seeds are not carried "naked" on the flower but rather contained within a protective wall. Many have evolved tissues to survive heat, cold, and drought.
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Blue Bells (Hyacinthoides hispanica)
- Monocot
- Parallel venation
- Poisonous
- In earlier times, the sap from the bluebell was used for glue
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Staghorn Sumac (Rhus Typhina)
- Dicot (5 sepals & 5 petals)
- Pinnate venation; alternate leaf arrangement
- Has a slender filament
- Trees can grow from 15-25 feet tall
- Native Americans can create a lemon flavoured tea with the berries
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Daffodil (Narcissus)
- Monocots (6 petals)
- Root structure is a bulb with several roots attached to it
- The leaves and bulbs of the daffodil plant contain a poisonous alkaloid called lycorine
- Parallel venation
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Pussy Willow (Salix Discolour)
- Monocot
- Palmate venation
- Either all female or all male florets
- Have fuzzy white flower buds known as catkins
Structure of an Angiosperm
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- Pistil: the female part of the flower (Includes stigma, style, & ovary)
- Stigma: the sticky top of the style that serves to catch pollen
- Style: the middle part of the pistil
- Ovules: part of the ovary in which the eggs are produced
- Ovary: the swollen base of the pistil that contains the eggs
- Stamen: the male part of the flower (includes filament, anther, & pollen)
- Pollen: spore of a male gametophyte
- Anther: the upper part of the stamen where pollen is produced
- Filament: thin, stem-like part of the stamen that supports the anther
- Sepals: the outer, leave-like part of a bud that protects the flower
- Petals: brightly colored and oddly shaped in order to attract pollinators
- Receptacle: base of the flower
- Pedical: stalk on which the flower rests
Angiosperm Classes
Monocotyledonae (Monocots)
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Monocots are one of the classes of Angiosperms, their flower parts are in multiples of threes. Unlike dicots, monocot leave veins are parallel to each other. Monocot stems surprisingly do not grow thicker from year to year! In a cross section of a stem, monocots gave vascular bundles that are scattered. In addition, bundles of xylem and phloem alternate with one another in a circle.
Some examples of monocots include: corn, wheat, lilies, daffodils, orchids, and palms.
Some examples of monocots include: corn, wheat, lilies, daffodils, orchids, and palms.
Dicotyledonae (Dicots)
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Dicots are the second class in angiosperms. Dicot leave veins form a branching network and their flower parts are often in multiples of four or five. Unlike monocot stems, dicot stems grow thicker from year to year! When seen through a cross section, the dicot's stem's vascular bundles are arranged in a ring.
Some examples of dicots include, roses, clover, tomatoes, oaks, and daisies.
Some examples of dicots include, roses, clover, tomatoes, oaks, and daisies.
Interesting facts
- Did you know that Angiosperms came into being around 240 - 200 million years ago when they diverged from gymnosperms!
- There are more than 250,000 species of flowering plants in the world!
- Angiosperms comprise of more than 90% of the Kingdom Plantae!