Chapter 3   Lesson 1Flower – the structure of anangiosperm plant that contains themale and female reproductive organs.Func...
Where do you find a flowers?……at   the enlarged end Of the stemcalled the flower    stalk orpedicel.
Parts of the flower
Pistil- female reproductive partof the flowerIncludes:1. Stigma – sticky top surfacewhere the pollen sticks2. Style – long...
3.Ovary – houses the ovules thatcontain the embryo. The ovarydevelops into the fruit that providesnutrients for the develo...
ovules
Stamen – male reproductive part ofthe flowerIncludes:1. Anther – where one finds thepollen grains2. Pollen – contain the s...
AntherAnther     With           pollen         Filament
Other important parts of a flower:1.Receptacle – the base of theflower2. Sepals – small green leaves thathouse the develop...
Other important parts:3. Pedicel – the end of the stemwhere the flower is found4. Petals – colorful structuressurround the...
Complete and Incomplete FlowersComplete flowers A flower that has all of thenormal flower parts, namely, thesepals, petal...
Complete and Incomplete FlowersIncomplete flowersAn incomplete flower is missingone of the four major parts of theflower,...
Incomplete Flower – Beech
Incomplete FlowersExample: Poinsettia lacks petals – red Isactually leaves calledBracts.
Perfect vs. Imperfect         FlowersPerfect flowersFlower with both sexeshas both stamens andpistilsMay lack sepals or...
Perfect flower
Perfect vs. Imperfect FlowersImperfect flowers lack eitherstamens or pistils, and may or maynot have sepals or petals.
Types of Imperfect Flowers1. Pistillate FlowerIs a female flowerHave a functional pistil, buteither have no stamen at al...
Types of Imperfect Flowers2. Staminate Flower Is a male flower Have functional stamenscapable of producing pollen, butei...
Types of Imperfect Plants1. Monoecious -Said of a plant species in whichall individuals bear both staminateand pistillate...
Types of Imperfect Plants1. Monoecious -For example:Oaks—with maleflowers in catkins,producingwind-borne pollen,
Types of Imperfect Plants1.   Monoecious -For example:Oaks—with male flowers in catkins, producing wind-borne pollen,and f...
Types of Imperfect Plants1. Monoecious -Ex.   Also corn –          tassel = male          and ear = female but on       sa...
Types of Imperfect Plants2. Dioecious     -said of a plant specieswhich has some individualswhich bear only staminateflow...
Types of Imperfect Plants2.   Dioecious -and there are no perfect flowers.These are the species that arecommonly referre...
Flower ArrangementSome have a single flower on eachstalk like a rose.
Flower ArrangementMost are inflorescence whichhave clusters of flowers.
1. Soil fertility2. Hormones3. Leaves4. Flowers5. Day6. Long7. Day8. Morning Glory
Biology Lesson 3.1
Biology Lesson 3.1
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Biology Lesson 3.1

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Biology Lesson 3.1

  1. 1. Chapter 3 Lesson 1Flower – the structure of anangiosperm plant that contains themale and female reproductive organs.Function of theflower is toProduce S E E D s!
  2. 2. Where do you find a flowers?……at the enlarged end Of the stemcalled the flower stalk orpedicel.
  3. 3. Parts of the flower
  4. 4. Pistil- female reproductive partof the flowerIncludes:1. Stigma – sticky top surfacewhere the pollen sticks2. Style – long tube thatconnects the stigma and the ovary
  5. 5. 3.Ovary – houses the ovules thatcontain the embryo. The ovarydevelops into the fruit that providesnutrients for the developingembryo.4. Ovule – contains the egg celland when fertilized contains thedeveloping embryo. The ovulebecomes the seed.
  6. 6. ovules
  7. 7. Stamen – male reproductive part ofthe flowerIncludes:1. Anther – where one finds thepollen grains2. Pollen – contain the sperm nuclei3. Filament – the long stalk thatattaches the anther to the receptacle
  8. 8. AntherAnther With pollen Filament
  9. 9. Other important parts of a flower:1.Receptacle – the base of theflower2. Sepals – small green leaves thathouse the developing bud (flower).Collectively called the calyx.
  10. 10. Other important parts:3. Pedicel – the end of the stemwhere the flower is found4. Petals – colorful structuressurround the reproductive parts offlower and attract insects.Collectively called corolla.
  11. 11. Complete and Incomplete FlowersComplete flowers A flower that has all of thenormal flower parts, namely, thesepals, petals, stamens, andpistil.
  12. 12. Complete and Incomplete FlowersIncomplete flowersAn incomplete flower is missingone of the four major parts of theflower, the stamen, pistil, petals, orsepals. Examples: the oak family, thebirch family, and the walnut family
  13. 13. Incomplete Flower – Beech
  14. 14. Incomplete FlowersExample: Poinsettia lacks petals – red Isactually leaves calledBracts.
  15. 15. Perfect vs. Imperfect FlowersPerfect flowersFlower with both sexeshas both stamens andpistilsMay lack sepals orpetals.
  16. 16. Perfect flower
  17. 17. Perfect vs. Imperfect FlowersImperfect flowers lack eitherstamens or pistils, and may or maynot have sepals or petals.
  18. 18. Types of Imperfect Flowers1. Pistillate FlowerIs a female flowerHave a functional pistil, buteither have no stamen at all, orhave stamens with anthers thatare incapable of producingpollen. example: corn ears
  19. 19. Types of Imperfect Flowers2. Staminate Flower Is a male flower Have functional stamenscapable of producing pollen, buteither have no ovary at all, or anovary which is not fertile.Example: corn tassels
  20. 20. Types of Imperfect Plants1. Monoecious -Said of a plant species in whichall individuals bear both staminateand pistillate flowers,
  21. 21. Types of Imperfect Plants1. Monoecious -For example:Oaks—with maleflowers in catkins,producingwind-borne pollen,
  22. 22. Types of Imperfect Plants1. Monoecious -For example:Oaks—with male flowers in catkins, producing wind-borne pollen,and female flowerson the stems,producingacorns.
  23. 23. Types of Imperfect Plants1. Monoecious -Ex. Also corn – tassel = male and ear = female but on same plant
  24. 24. Types of Imperfect Plants2. Dioecious -said of a plant specieswhich has some individualswhich bear only staminateflowers,and some which bear onlypistillate flowers,
  25. 25. Types of Imperfect Plants2. Dioecious -and there are no perfect flowers.These are the species that arecommonly referred to as havingmale and female plants.
  26. 26. Flower ArrangementSome have a single flower on eachstalk like a rose.
  27. 27. Flower ArrangementMost are inflorescence whichhave clusters of flowers.
  28. 28. 1. Soil fertility2. Hormones3. Leaves4. Flowers5. Day6. Long7. Day8. Morning Glory
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