REPRODUCTION AND STRUCTURE NOTES Plants. Plant Reproduction Reproduction is how organisms make new...
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REPRODUCTION AND STRUCTURE NOTES Plants
REPRODUCTION AND STRUCTURE NOTES Plants. Plant Reproduction Reproduction is how organisms make new individuals of the same kind. Plants (and many other
Plant Reproduction Reproduction is how organisms make new
individuals of the same kind. Plants (and many other organisms) can
reproduce asexually and sexually.
Slide 3
FLOWERS Flowers on plants are the structures for sexual
reproduction. Flowering plants are called Angiosperms.
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Flower Structure Petals: Brightly colored parts of a flower.
Attract animal pollinators. Sepals: Leaf like parts that surround
the petals. Protect the developing flower.
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Male Plant Structure Stamen: Male reproductive part. Consists
of an anther at the tip of a filament. Pollen: Male reproductive
cell in plants (sperm).
Slide 6
Male Plant Structure Anther: structure that produces pollen
Filament: Thin stalk topped by an anther.
Slide 7
Female Plant Structure Pistil: The female reproductive organ in
the flower. Consists of an ovary, style and stigma. Stigma: Tip of
the pistil where pollen collects. Style: The long tube of the
pistil that transfers pollen from the stigma to the ovary.
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Female Plant Structure Ovary: Lower part of the pistil that
produces eggs inside ovules. After fertilization, it will then
develop into the fruit on a plant. Ovule: Each ovule contains an
egg. This will develop into a seed.
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Flower anatomy
Slide 10
Pollination The transfer of pollen from the male reproductive
structure to a female reproductive structure. Moved from one flower
to another by animals or wind
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Fertilization In the anther (male), pollen grains are produced.
The pollen are trapped on the stigma (female). The pollen (sperm),
travels down a pollen tube to the ovary.
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Fertilization
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Inside the ovary, the sperm enters the ovule which contains an
egg. The sperm fertilizes the egg. The fertilized egg develops into
a seed. The structure of a seed contains a tiny plant embryo.
Slide 14
Seed Dispersal Seed are spread in many ways. Wind blown
Attached to animals or passed through an animals digestive tract
Carried by water Ejected from seed pod
Slide 15
Germination The seed absorbs water and prepares to sprout. The
tiny embryo sprouts from the seed and continues to grow. Roots
grow, followed by stems and leaves