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Plants

Plants. Plant Survival on Land. Three adaptations have allowed plants to thrive on land The ability to prevent water loss The ability to reproduce without water The ability to absorb and transport nutrients. Preventing Water Loss.

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Plants

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  1. Plants

  2. Plant Survival on Land • Three adaptations have allowed plants to thrive on land • The ability to prevent water loss • The ability to reproduce without water • The ability to absorb and transport nutrients

  3. Preventing Water Loss • Cuticle – a waxy protective covering on plant surfaces that prevents water loss

  4. Reproducing by Spores and Seeds • Spore – a haploid reproductive cell surrounded by a hard outer wall • Seed – an embryo surrounded by a protective coat

  5. Absorbing and Transporting Materials • Vascular tissue – transports water and dissolved substances from one part of the plant to another • Two types of specialized tissue • Xylem – carries water from the roots to the stems and leaves • Phloem – carries organic compounds (like carbohydrates) in any direction

  6. Xylem and Phloem

  7. Classifying Plants • Nonvascular plants – don’t have true vascular tissue or roots, stems, or leaves • Example – mosses • Vascular plants – have vascular tissue and true roots, stems, and leaves. • Example – ferns, conifers, flowering plants

  8. Vascular Plants • Seedless • Ferns • Seed plants – produce seeds for reproduction • Gymnosperms – conifers (cone bearing trees) • Example – Pine trees • Angiosperms – flowering and fruiting plants • Example – apple and orange trees

  9. Types of Trees • Deciduous trees – leafy trees. Lose their leaves. • Coniferous trees – have pine needles rather than leaves. Have cones.

  10. Monocots and Dicots • Flowering plants (angiosperms) are divided into: • Monocots • Dicots

  11. Plant Cells • Three types of plant cells: • Parenchyma • Collenchyma • Sclerenchyma

  12. Flower Structure

  13. Leaf Structure

  14. Self Quiz • What are vascular plants? What are nonvascular plants? • What are angiosperms? What are gymnosperms? • What are monocots? What are dicots? • What are seeds? Cones? Fruit?

  15. Leaf Functions • Leaves serve as the primary site of photosynthesis in most plants

  16. Plant Leaves • Stoma (stomata)– the major pathways through which CO2 enters and O2 leaves a plant • Guard cells – control the opening and closing of the stoma

  17. Types of Leaves • Simple leaf • Compound leaf • Doubly compound leaf

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