'Ovulate cone' diaporamas de présentation

Chapter 27 : Plant Kingdom: Seed Plants

Chapter 27 : Plant Kingdom: Seed Plants. Seeds. Multicellular young plant with embryonic root, stem and its leaves Develop from fertilized egg, female gametophyte and its tissues Protected by seed coat Embryonic sporophyte. Gymnosperms and Angiosperms bear seeds.

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Fig. 30-2

PLANT GROUP. Mosses and other nonvascular plants. Ferns and other seedless vascular plants. Seed plants (gymnosperms and angiosperms). Reduced, independent (photosynthetic and free-living). Reduced (usually microscopic), dependent on surrounding sporophyte tissue for nutrition. Gametophyte.

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Fig. 30-2

PLANT GROUP. Mosses and other nonvascular plants. Ferns and other seedless vascular plants. Seed plants (gymnosperms and angiosperms). Reduced, independent (photosynthetic and free-living). Reduced (usually microscopic), dependent on surrounding sporophyte tissue for nutrition. Gametophyte.

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Seeds

Seeds. What terrestrial adaptations led to the success of seed plants? Gametophyte generation is even more reduced!. First seed plants. Gymnosperm: conifers vascular heterospory male vs. female gametophytes seeds naked seeds (no fruit) pollen contain male gametophyte

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Seed Plants

Seed Plants. Two groups of seed plants: Gymnosperms Angiosperms Gymnosperms include the conifers and cycads and this group originated in the Carboniferous period.

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Lab 13

Lab 13. Coniferophyta, Gnetophyta. Coniferophyta. General features of the seed plants Common name : Conifers Synonyms : Pinophyta Sporophytes : Monoecious or dioecious; trees, shrubs Strobili : Simple or clustered pollen cone; compound seed cone with ovules on cone scales. Coniferophyta.

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