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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