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PlantReproduction
Introduction• A flower has a set of adaptations– Petals have modified leaves– Entire flower is a highly modified branch• F...
Flower• Function– To produce seeds for reproduction
Terminology• Whorl– Arrangement of three or more leaves,petals, or other organs radiating from theplant• Non-essential flo...
Parts of the Flower• Receptacle– Base of the flower
Parts of the Flower• Sepals– Non-essential parts of the flower– Compose the first whorl– Collectivelyknown as the calyx
Parts of the Flower• Petals– Non-essential parts of the flower• Compose the second whorl• Collectively known as the corolla
Parts of the Flower• Stamen– Essential flower parts• Compose the third whorl• Male reproductive organ–Anther : Produces po...
Parts of the Flower• Carpels– Essential flower parts– Compose the last, fourth whorl– Usually fused to make a single pisti...
Carpels vs. Pistils• (A) shows a single pistilconsisting of severalfused carpels• (B) shows severalpistils, each consistin...
Parts of the flower• Female reproductive organ– Ovary : Swollen base of the pistil (containsovules, which contain egg cell...
Types of Flowers• Perfect– Has both pistils andstamens in the same flower– Have all 4 whorls of modified leaves• Imperfect...
Imperfect Flowers• Monoecious– “Same house”– Separate male and female flowers on thesame plant– Example• Corn
Imperfect Flowers• Dioecious– “Two houses”– Flowers are all male or all female on thesame plant– Example• Ginko tree–Most ...
Plants reproduction moodle
Plants reproduction moodle
Plants reproduction moodle
Plants reproduction moodle
Plants reproduction moodle
Plants reproduction moodle
Plants reproduction moodle
Plants reproduction moodle
Plants reproduction moodle
Plants reproduction moodle
Plants reproduction moodle
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Plants reproduction moodle

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Transcript of "Plants reproduction moodle"

  1. 1. PlantReproduction
  2. 2. Introduction• A flower has a set of adaptations– Petals have modified leaves– Entire flower is a highly modified branch• Flower shape, scent, color attracts insects,thereby ensuring the reproduction of the plant
  3. 3. Flower• Function– To produce seeds for reproduction
  4. 4. Terminology• Whorl– Arrangement of three or more leaves,petals, or other organs radiating from theplant• Non-essential flower parts– Not directly involved in reproduction• Essential flower parts– Directly involved in reproduction
  5. 5. Parts of the Flower• Receptacle– Base of the flower
  6. 6. Parts of the Flower• Sepals– Non-essential parts of the flower– Compose the first whorl– Collectivelyknown as the calyx
  7. 7. Parts of the Flower• Petals– Non-essential parts of the flower• Compose the second whorl• Collectively known as the corolla
  8. 8. Parts of the Flower• Stamen– Essential flower parts• Compose the third whorl• Male reproductive organ–Anther : Produces pollen (containssperm cells)–Filament : Supports the anther
  9. 9. Parts of the Flower• Carpels– Essential flower parts– Compose the last, fourth whorl– Usually fused to make a single pistil– Female reproductive organ
  10. 10. Carpels vs. Pistils• (A) shows a single pistilconsisting of severalfused carpels• (B) shows severalpistils, each consistingof a single carpel
  11. 11. Parts of the flower• Female reproductive organ– Ovary : Swollen base of the pistil (containsovules, which contain egg cells)– Style: Stalk of the pistil– Stigma: Tip of the pistil, sticky to capture fallingpollen
  12. 12. Types of Flowers• Perfect– Has both pistils andstamens in the same flower– Have all 4 whorls of modified leaves• Imperfect– Has either pistil or stamens in the same flower– Missing one or more flower parts– Two types• Monoecious• Dioecious
  13. 13. Imperfect Flowers• Monoecious– “Same house”– Separate male and female flowers on thesame plant– Example• Corn
  14. 14. Imperfect Flowers• Dioecious– “Two houses”– Flowers are all male or all female on thesame plant– Example• Ginko tree–Most are male–Female produces seeds with foul odor
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