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Introduction to Agriculture, Food, and Natural
Resources
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Introduction to Agriculture, Food, and Natural
Resources
All in a Flower
Unit 5 – Lesson 5.2 All About Plants
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Importance of Flowers
Value to the plant – sexual reproduction
Processes of reproduction:
Pollination
Fertilization
Seeds are produced
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Parts of the Flower
Parker, 2004
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Female Flower Parts
• Ovule: The egg cell of the plant – becomes the seed
when fertilized.
• Pollen tube: Transfers pollen from stigma to ovule.
• Pistil: Female part of flower, composed of three parts
– Stigma: Collects pollen
– Style: Supports stigma
– Ovary: Contains one or more ovules
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Male Flower Parts
• Anther: Develops and contains pollen.
• Stamen: Male part of flower, consists of two parts
– Filament: Supports anther to assist with
pollination
– Pollen: Male sex cell
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Supporting Parts
• Petal: Protects pistil and stamens, and attracts
insects for pollination.
• Sepal: Outermost leaves protecting the flower
during the bud stage.
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Types of Flowers
• Complete: Contains all major flower parts including
petals, sepals and both reproductive organs.
• Perfect: Includes both female and male reproductive
parts.
• Incomplete: Missing one or more of the sepals, petals,
stamens, or pistils.
• Imperfect:
– Pistillate – lacks stamens
– Staminate – lacks pistils
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References
Herren, R. V., & Donahue, R. L. (2000). Delmar’s
agriscience dictionary with searchable CD-ROM.
Albany, NY: Delmar.
Parker, R. (2010). Plant and soil science:
Fundamentals and applications. Clifton Park,
NY: Delmar.
Schooley, J. (1997). Introduction to botany. Albany,
NY: Delmar Publishers.
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