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Chapter 9: Flowers and Reproduction (Flower Structure and Cross…
Chapter 9: Flowers and Reproduction
Concepts
Reproduction Functions
Producing offspring that have identical parental genes
Producing offspring with genetically different parents
Asexual Reproduction
Fragmentation
A method of asexual reproduction
Sexual Reproduction
Gametophytes
Fertilization
Flower Structure
receptacle
end of axis where other flower parts attach
sepals
lowest and outermost flower appendages
Pedicel
the flower stalk
petals
above sepals on receptacle
stamens
the "male" part of flower
carpels
located on highest part of receptacle
Embryo and Seed Development
The Plant Life Cycle
Fruit Development
Ovule develops into seed and ovary into a fruit
Inflorescences and Pollination
The collective visual of flowers to signal pollinators
Fruit Types and Seed Dispersal
True Fruits and Accessory Fruits
true fruits only contain ovary tissue
nonovarian tissue is present
Classification of Fruit Types
Indechiscent fruits
does not break open
Dehiscent fruits
breaks open and releases seeds
Flower Structure and Cross-Pollination
Monoecious and Dioecious Species
marijuana, dates, willows, papayas
cattails and corn
Animal-Pollinated Flowers
Stigma and Pollen Incompatibility
chemical reactions between pollen and carpels prevent pollen growth
Wind-Pollinated Flowers
Stamen and Style Maturation Times
Ovary Position
Well protected from pollinators
Cross-Pollination
Pollination of carpel by pollen from different individuals
Self-pollination is pollinated by the same plant
