What human reproductive organ is functionally similar to this seed?

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Threats to Plant Diversity • Destruction of habitat is causing extinction of many plant species • Loss of plant habitat is often accompanied by loss of the animal species that plants support • At the current rate of habitat loss, 50% of Earth’s species will become extinct within the next 100–200 years Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings
Fig. 30-UN3 Five Derived Traits of Seed Plants Reduced gametophytes Heterospory Microscopic male and female gametophytes (n) are nourished and protected by the sporophyte (2n) Microspore (gives rise to a male gametophyte) Megaspore (gives rise to a female gametophyte) Male gametophyte Female gametophyte Ovules Ovule (gymnosperm) Integument (2n) Megaspore (2n) Megasporangium (2n) Pollen Pollen grains make water unnecessary for fertilization Seeds Seeds: survive better than unprotected spores, can be transported long distances Integument Food supply Embryo
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Fig. 30-1 What human reproductive o
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Fig. 30-1 What human reproductive o
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Advantages of Reduced Gametophytes
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Fig. 30-2c Seed plants (gymnosperms
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Ovules and Production of Eggs • A
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Pollen and Production of Sperm •
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Pollen and Production of Sperm •
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Fig. 30-3-2 Spore wall Female gamet
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The Evolutionary Advantage of Seeds
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The Evolutionary Advantage of Seeds
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Fig. 30-3-3 Seed coat (derived from
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Concept 30.2: Gymnosperms bear “n
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Gymnosperm Evolution (fun fact) •
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• Living seed plants can be divid
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• Living seed plants can be divid
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Phylum Cycadophyta • Individuals
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Phylum Ginkgophyta • This phylum
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Fig. 30-5c Ginkgo biloba leaves and
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Fig. 30-5d Gnetum
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Fig. 30-5f Welwitschia SW Africa so
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Phylum Coniferophyta • This phylu
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Fig. 30-5i European larch
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Fig. 30-5k Sequoia
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Fig. 30-5m Common juniper
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Result= 1. Loss of habitat! 2. Cata
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Life Stages 1. Seed - falls to grou
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The Life Cycle of a Pine: A Closer
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The Life Cycle of a Pine: A Closer
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• The pine tree is the sporophyte
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• The pine tree is the sporophyte
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Fig. 30-UN2 Nonvascular plants (bry
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Flowers • The flower is an angios
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• A flower is a specialized shoot
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• A flower is a specialized shoot
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• A carpel consists of an ovary a
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Fig. 30-8 Tomato Ruby grapefruit Ne
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Fig. 30-9 Wings Seeds within berrie
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Guanacaste: A victim of ice age ext
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Megalonyx jeffersonii
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The Angiosperm Life Cycle • The f
Page 84 and 85: The Angiosperm Life Cycle • The f
Page 86 and 87: Silk = style; trichomes make them s
Page 88 and 89: • A pollen grain that has landed
Page 90 and 91: • One sperm fertilizes the egg, w
Page 92 and 93: Fig. 30-10-1 Key Haploid (n) Diploi
Page 94 and 95: Fig. 30-10-3 Key Haploid (n) Diploi
Page 96 and 97: Animation: Plant Fertilization Anim
Page 98 and 99: Fossil Angiosperms • Primitive fo
Page 100 and 101: Angiosperm Phylogeny • The ancest
Page 102 and 103: Angiosperm Diversity • The two ma
Page 104 and 105: Basal Angiosperms • Three small l
Page 106 and 107: Fig. 30-13b Water lily
Page 108 and 109: Magnoliids • Magnoliids include m
Page 110 and 111: Monocots • More than one-quarter
Page 112 and 113: Fig. 30-13e1 Pygmy date palm (Phoen
Page 114 and 115: Fig. 30-13g Barley Anther Filament
Page 116 and 117: Fig. 30-13h California poppy
Page 118 and 119: Fig. 30-13j Dog rose
Page 120 and 121: Fig. 30-13l Zucchini flowers
Page 122 and 123: Fig. 30-13n Monocot Characteristics
Page 124 and 125: Evolutionary Links Between Angiospe
Page 127 and 128: Ocotillo
Page 129 and 130: Red = hummingbirds White = moths/ba
Page 131 and 132: Products from Seed Plants • Most
Page 133: Table 30-1b Cinchona bark, source o
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What human reproductive organ is functionally similar to this seed?

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