Reproduction in Flowering
Plants
Flower

• Sexual reproductive structure
• Produces egg and sperm
• Fertilization takes place inside
the flower
Pollen is produced in
the male organs of the
flowers - anthers.
Pollination occurs
when pollen is
transferred from the
ant...
Female
reproductive
organ

Pistil
*Stigma –top of the pistil,
Sticky surface for pollen to
stick to
*Style – connects the ...
Pollination
• Transfer of mature pollen grains from the
anther to the stigma
-wind
-insects
-birds & other animals
• When a pollen grain lands on the
stigma, it germinates and a pollen tube
grows down through the style to an
ovule (egg)
Fertilization
• The sperm travels through the pollen tube to the
ovule. The sperm & egg fuse forming the zygote
(fertilize...
*Self pollination –pollen from same flower
*Cross pollination – pollen from a different flower
- more variation
• The ovary and zygote (fertilized ovule)
develop and ripen.
*The ovule forms the seed and the ovary
forms the fruit.
• A ...
The plant embryo uses food stored in the
cotyledon of the seed until it develops
leaves for photosynthesis
Seedling
micropyle –opening in ovule where pollen tube attached,
sperm entered
hilum –scar where ovule attached to ovary
r...
Epicotyl – grows above the cotyledons and gives
rise to the leaves.
Hypocotyl –below the point of attachment of the
cotyle...
Parts of a seed
• Dicot

Seed coat
Hypocotyl
Epicotyl
Cotyledons
Endosperm

• Monocot

Seed coat
Epicotyl
Hypocotyl

Cotyl...
Seed Germination
Monocot

Dicot
Epigeous

Hypogeous
Radicle
7. Reproduction in flowering plants - Part 2
7. Reproduction in flowering plants - Part 2
7. Reproduction in flowering plants - Part 2
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7. Reproduction in flowering plants - Part 2

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7. Reproduction in flowering plants - Part 2

  1. 1. Reproduction in Flowering Plants
  2. 2. Flower • Sexual reproductive structure • Produces egg and sperm • Fertilization takes place inside the flower
  3. 3. Pollen is produced in the male organs of the flowers - anthers. Pollination occurs when pollen is transferred from the anthers to the female organs by wind or by animals. If the female stigma is receptive to a pollen grain, the pollen produces a pollen tube, which grows through the female tissue to the egg, where fertilization takes place by the sperm nucleus.
  4. 4. Female reproductive organ Pistil *Stigma –top of the pistil, Sticky surface for pollen to stick to *Style – connects the stigma to the ovary *Ovary –contains ovules ( eggs) Male reproductive organ Stamen *Anther – produces sperm nuclei by meiosis. Sperm nuclei are enclosed by pollen grains. *Filament – holds the anther up
  5. 5. Pollination • Transfer of mature pollen grains from the anther to the stigma -wind -insects -birds & other animals
  6. 6. • When a pollen grain lands on the stigma, it germinates and a pollen tube grows down through the style to an ovule (egg)
  7. 7. Fertilization • The sperm travels through the pollen tube to the ovule. The sperm & egg fuse forming the zygote (fertilized egg) –this grows into the plant embryo (cells grow by mitosis)
  8. 8. *Self pollination –pollen from same flower *Cross pollination – pollen from a different flower - more variation
  9. 9. • The ovary and zygote (fertilized ovule) develop and ripen. *The ovule forms the seed and the ovary forms the fruit. • A fruit is a ripened ovary
  10. 10. The plant embryo uses food stored in the cotyledon of the seed until it develops leaves for photosynthesis
  11. 11. Seedling micropyle –opening in ovule where pollen tube attached, sperm entered hilum –scar where ovule attached to ovary radicle –embryonic root
  12. 12. Epicotyl – grows above the cotyledons and gives rise to the leaves. Hypocotyl –below the point of attachment of the cotyledon, develops into the stem.
  13. 13. Parts of a seed • Dicot Seed coat Hypocotyl Epicotyl Cotyledons Endosperm • Monocot Seed coat Epicotyl Hypocotyl Cotyledon Radicle
  14. 14. Seed Germination Monocot Dicot Epigeous Hypogeous Radicle
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