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Chapter 1 plants

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    Chapter 1 plants Chapter 1 plants Presentation Transcript

    • How Plants Live and Grow Chapter 1
    • Plant Roots
      • What is the job of plant roots?
      • They hold plants in the ground and take water and minerals from the soil
      • A mineral is a natural, NONLIVING, material that can be found in soil
    • Plant Stems
      • What is the job of a plant stem? (*think of our backbone)
      • Stems hold up the leaves, flowers and fruit of a plant
      • Stems have tiny tubes in them that carry water and minerals from the roots up to the plant
      • Where do stems grow?
    • Plant Leaves
      • What kind of Plant Leaves have you seen?
    • Plant Leaves
      • Green Plants use energy from the sun to make food (sugar)
      • See diagrams on pg. A10-A11
    • Flower Parts
      • Point to the Petal on pg. A14, What is a Petal?
      • Where is Pollen formed? Where does it have to be moved to first?
      • Pollen must be moved to the center of the flower BEFORE seeds can form!
    • How do seeds form?
      • 1. Pollen moves to the center of the flower
      • 2. Seeds begin to grow
      • 3. A fruit forms around the seeds to protect them
      • 4. As the fruit grows, the flower petals fall off
    •  
    • Scattering Pollen
      • Who can carry pollen from flower to flower?
      • BIRDS AND INSECTS!
      • When bees carry pollen to the stem-like part of the flower it’s called pollination
      • How else can pollen be scattered?
      • WIND!
    • How do Cones form seeds?
      • Pollen from cones is scattered by the wind
      • This pollen lands on a cone and pollinates it, then seeds form and grow! (Have you seen a pinecone??)
      • Trees with Cones, like Evergreens , keep their leaves all year long! **Pine and Fir Trees*
    • Seed Parts
      • Seeds come in many shapes, colors and sizes!
      • All seeds can grow into new plants
    • Seed Parts
      • The seed coat protects the seeds, like a coat we would wear to keep us warm
      • The developing plant gets food from the seed leaf
      • Why do you think seeds need to be scattered?
    • Scattering Seeds
      • Seeds are scattered by……
      • 1. The wind (what kinds of seeds?)
      • 2. Water
      • Animals (which animals do you think carry seeds?)
    • The Life Cycle of a Flowering Plant
      • Every living thing has a life cycle (We go from infants, to child, teenager and adult)
      • See diagram on pg. A 22-23
      • Seeds grow in the center of the flower. After the petals dry up and fall off, seeds also fall to the ground!
    • Germination
      • The seed soaks up the water and swells until the seed coat splits
      • A root begins to grow out of the seed down into the soil and the stem begins to grow up!
      • This is called germination when a tiny plant begins to grow and develop!
    • Seedling
      • A Seedling is a young plant that grows out of the ground/ point to the picture on pg. A23
      • The Plant is fully grown and will look like the parent plant (most flowers look similar)
      • What would happen if a seed was planted in dry soil?
    • Conifers
      • An Evergreen tree that makes cones is called a Conifer.
      • Conifers keep their leaves all year round!
      • The seeds grow inside the cone and when the scales dry out the seeds fall out!
    • The Life Cycle of a Conifer
      • Seeds fall to the ground and some are germinated or scattered by the wind
      • A Seedling begins to grow and cones form on the tree (usually in Spring). Seeds grow inside the POLLINATED cones.
      • Growth – the tree is fully grown! See pg. A24-25