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Download Fig. 7-0a - Hialeah Senior High School
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Campbell Chapters for Plants • Ch 38 – 38.1 only - Angiosperm Reproduction • Ch 39 – 39.2 – Plant hormones – 39.3 – Response to light – 39.5 – Response to attack from herbivores Figure 38.1 Figure 38.2 Stamen Anther Filament Petal Carpel Stigma Style Ovary Germinated pollen grain (n) (male gametophyte) Ovary Ovule Embryo sac (n) (female gametophyte) Anther Pollen tube FERTILIZATION Sepal Egg (n) Sperm (n) Receptacle (a) Structure of an idealized flower Key Zygote (2n) Mature sporophyte plant (2n) Haploid (n) Diploid (2n) (b) Simplified angiosperm life cycle Germinating seed Seed Seed Simple fruit Embryo (2n) (sporophyte) Figure 38.2a Stamen Anther Filament Petal Stigma Carpel Style Ovary Sepal Receptacle (a) Structure of an idealized flower Figure 38.2b Anther Germinated pollen grain (n) (male gametophyte) Ovary Ovule Embryo sac (n) (female gametophyte) Pollen tube FERTILIZATION Egg (n) Sperm (n) Key Zygote (2n) Mature sporophyte plant (2n) Haploid (n) Diploid (2n) (b) Simplified angiosperm life cycle Germinating seed Seed Seed Simple fruit Embryo (2n) (sporophyte) Figure 38.4a Abiotic Pollination by Wind Pollination by Bees Common dandelion under normal light Hazel staminate flowers (stamens only) Hazel carpellate flower (carpels only) Common dandelion under ultraviolet light Figure 38.4b Pollination by Moths and Butterflies Pollination by Flies Pollination by Bats Anther Moth Fly egg Stigma Moth on yucca flower Blowfly on carrion flower Pollination by Birds Hummingbird drinking nectar of columbine flower Long-nosed bat feeding on cactus flower at night Figure 38.4ba Anther Moth Stigma Moth on yucca flower Figure 38.4bb Fly egg Blowfly on carrion flower Figure 38.4bc Long-nosed bat feeding on cactus flower at night Figure 38.4bd Hummingbird drinking nectar of columbine flower Figure 38.5 Figure 38.6-3 2 1 Stigma Pollen grain Pollen tube Ovule 2 sperm Polar nuclei Style Ovary Egg Ovule Synergid Polar nuclei Egg Micropyle 3 Endosperm nucleus (3n) (2 polar nuclei plus sperm) 2 sperm Zygote (2n) Figure 38.8 Seed coat Epicotyl Hypocotyl Radicle Cotyledons (a) Common garden bean, a eudicot with thick cotyledons Seed coat Endosperm Cotyledons Epicotyl Hypocotyl Radicle (b) Castor bean, a eudicot with thin cotyledons Scutellum (cotyledon) Coleoptile Coleorhiza Pericarp fused with seed coat Endosperm Epicotyl Hypocotyl Radicle (c) Maize, a monocot Figure 38.8a Seed coat Epicotyl Hypocotyl Radicle Cotyledons (a) Common garden bean, a eudicot with thick cotyledons Figure 38.9a Foliage leaves Cotyledon Hypocotyl Cotyledon Epicotyl Cotyledon Hypocotyl Hypocotyl Radicle Seed coat (a) Common garden bean Figure 38.9b Foliage leaves Coleoptile Coleoptile Radicle (b) Maize Figure 38.10 Stigma Carpels Stamen Flower Style Petal Ovary Stamen Sepal Ovule Stigma Ovule Pea flower Raspberry flower Carpel (fruitlet) Seed Stigma Ovary Stamen Pineapple inflorescence Each segment develops from the carpel of one flower Stamen Ovary (in receptacle) Apple flower Remains of stamens and styles Sepals Seed Pea fruit (a) Simple fruit Raspberry fruit (b) Aggregate fruit Pineapple fruit (c) Multiple fruit Receptacle Apple fruit (d) Accessory fruit Figure 38.11a Dispersal by Wind Dandelion fruit Dandelion “seeds” (actually one-seeded fruits) Tumbleweed Winged seed of the tropical Asian climbing gourd Alsomitra macrocarpa Winged fruit of a maple Dispersal by Water Coconut seed embryo, endosperm, and endocarp inside buoyant husk Figure 38.11b Dispersal by Animals Fruit of puncture vine (Tribulus terrestris) Squirrel hoarding seeds or fruits underground Ant carrying seed with nutritious “food body” to its nest Seeds dispersed in black bear feces • The bending of a grass seedling toward light – Begins with the plant sensing the direction, quantity, and color of the light Figure 39.1
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