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Unit 7 Chapter 24 Reproduction in Plants

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Unit 7 Chapter 24 Reproduction in Plants

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    1. Unit 7 Chapter 24 Reproduction in Plants

    2. Alternation of generations The basic life cycle pattern for most plants Sporophyte stage Diploid, asexual, produces spores Gametophyte stage Haploid, sexual, produces gametes

    3. Vegetation Propagation A type of asexual reproduction where a new plant is produced from existing plant organs or parts Ex: plant cuttings

    4. Life cycle of Mosses

    5. Moss life cycle

    6. Life cycle of Ferns

    7. Life cycle of Conifers

    8. Gymnosperm life cycle

    9. Flower structure Petals Colorful, to attract pollinators Sepals Leaflike, to protect inner organs Stamen (male organ) Contains anther, produces pollen Pistil (female organ) Contains ovary, produces eggs

    10. Life cycle of a flowering plant Double fertilization One sperm joins the egg, while the other joins the central cell, forming the endosperm Endosperm Food storage tissue that supports development of growing embryo

    11. Double fertilization

    12. Fruit formation The mature ovary containing seeds Modified for seed dispersal

    13. Fruit structure

    14. Seed germination The beginning of the development of a new plant after a period of inactivity, called dormancy First to appear is the radicle (embryonic root) followed by the hypocotyl (embryonic stem)

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