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16fruit_dispersal
Course: LIFE 102, Fall 2009School: Lake County
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Word Count: 412
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Fruit Fertilization, Development & Dispersal General Life Cycle Represents mitosis Zygote Sporophyte Spore Ma Cell Fertilization Gametes (Eggs & Sperm) Diploid 2n Haploid 1n Meiosis Spores Gametophyte Fig. 13.17 & L in packet Gametophyte Development pollen grains embryo sac s iis os os e eii m m 2 polar nuclei endosperm n on ttiio za za illii rtti er ffe 8 nuclei egg sperm zygote...
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Fruit Fertilization, Development & Dispersal
General Life Cycle
Represents mitosis Zygote Sporophyte Spore Ma Cell
Fertilization Gametes (Eggs & Sperm)
Diploid 2n Haploid 1n
Meiosis Spores Gametophyte
Fig. 13.17 & L in packet
Gametophyte Development
pollen grains embryo sac
s iis os os e eii m m
2 polar nuclei endosperm
n on ttiio za za illii rtti er ffe
8 nuclei egg sperm
zygote
Fertilization
Pollen & Tube Development
Fig. 23.15 tube-cell nucleus generative cell and nucleus mitosis
2 sperm
Double Fertilization
sperm
embyro sac
ovary endosper m 3n zygote 2n
ovary fruit 2 ovulpolar nuclei ovule wall seed coat wall e coat egg carpel
Ripening Process
Sour Green Hard No smell ethylene
ethylene
ethylene
Sweet Red Soft Aromatic
Variation in Fruit Types
Simple, Fleshy Fruit
Berry Drupe
Hesperidium Fig. 23.20
Pome
Simple, Dehiscent, Dry Fruit
Follicle Legume
Silique Fig. 23.21
Capsule
Simple, Indehiscent, Dry Fruit
Achene Samara
Grain
Nut
Fig. 23.22
Complex Fruit
Aggregate Multiple
Fig. 23.23
Commercial Applications
Ethylene
Commercial Applications
Gibberellic Acid
Commercial Applications
Auxin
Dispersal: Importance
Movement of seed through: Space
Away from parent (competition, pathogen build-up) Into new territory
Time (dormancy)
Avoid competition Avoid unfavorable environment
Examples of Animal Dispersed Seeds & Fruits
Examples of Wind Dispersed Seeds & Fruit
Examples of Water Seeds Dispersed & Fruit
Coconut Sea Bean
Examples of Explosive Dehiscent Fruit & Seed Dispersal
Jewelweed
Impatiens capensis
Structural Variation in Fruits
(Some Examples)
Accessory Pepo Citrus
Capsule
Aggregate
Multiple
Lecture Activity
Write two questions appropriate for the exam: Identify the objective from the lecture that the question evaluates. One question should be lower level (list, define, name, etc.) One question should be higher level (explain, analyze, give an example of..., etc.
You may use any lecture from photosynthesis on.
Pinus aristata
Oldest mother?
Fruit Oddities
Stinkiest Fruit
Once cut open, the durian gives off such a strong and foul odor that it's banned on Singaporean subways. The boiled seeds of the durian are called betons. Southeast Asian origin
Fruit Oddities
Tree With Most Different Fruit
The Guinness World Record ...
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