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Chapter 1 plants

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  • 1. How Plants Live andHow Plants Live and GrowGrow Chapter 1Chapter 1
  • 2. Plant RootsPlant Roots  What is the job of plant roots?What is the job of plant roots?  They hold plants in the ground and take water and minerals fromThey hold plants in the ground and take water and minerals from the soilthe soil  A mineral is a natural, NONLIVING, material that can beA mineral is a natural, NONLIVING, material that can be found in soilfound in soil
  • 3. Plant StemsPlant Stems  What is the job of a plant stem? (*think of ourWhat is the job of a plant stem? (*think of our backbone)backbone)  Stems hold up the leaves, flowers and fruit of a plantStems hold up the leaves, flowers and fruit of a plant  Stems have tiny tubes in them that carry water andStems have tiny tubes in them that carry water and minerals from the roots up to the plantminerals from the roots up to the plant  Where do stems grow?Where do stems grow?
  • 4. Plant LeavesPlant Leaves  What kind of Plant Leaves have you seen?What kind of Plant Leaves have you seen?
  • 5. Plant LeavesPlant Leaves  Green Plants useGreen Plants use energy from the sunenergy from the sun to make food (sugar)to make food (sugar)  See diagrams on pg. A10-A11See diagrams on pg. A10-A11
  • 6. Flower PartsFlower Parts  Point to the Petal on pg. A14, What is a Petal?Point to the Petal on pg. A14, What is a Petal?  Where is Pollen formed? Where does it have toWhere is Pollen formed? Where does it have to be moved to first?be moved to first?  Pollen must be moved to the center of thePollen must be moved to the center of the flower BEFORE seeds can form!flower BEFORE seeds can form!
  • 7. How do seeds form?How do seeds form?  1. Pollen moves to the center of the flower1. Pollen moves to the center of the flower  2. Seeds begin to grow2. Seeds begin to grow  3. A fruit forms around the seeds to protect3. A fruit forms around the seeds to protect themthem  4. As the fruit grows, the flower petals fall off4. As the fruit grows, the flower petals fall off
  • 8. Scattering PollenScattering Pollen  Who can carry pollen from flower to flower?Who can carry pollen from flower to flower?  BIRDS AND INSECTS!BIRDS AND INSECTS!  When bees carry pollen to the stem-like part ofWhen bees carry pollen to the stem-like part of the flower it’s calledthe flower it’s called pollinationpollination  How else can pollen be scattered?How else can pollen be scattered?  WIND!WIND!
  • 9. How do Cones form seeds?How do Cones form seeds?  Pollen from cones is scattered by the windPollen from cones is scattered by the wind  This pollen lands on a cone and pollinates it,This pollen lands on a cone and pollinates it, then seeds form and grow! (Have you seen athen seeds form and grow! (Have you seen a pinecone??)pinecone??)  Trees with Cones, likeTrees with Cones, like EvergreensEvergreens, keep their, keep their leaves all year long! **Pine and Fir Trees*leaves all year long! **Pine and Fir Trees*
  • 10. Seed PartsSeed Parts  Seeds come in many shapes, colors andSeeds come in many shapes, colors and sizes!sizes!  All seeds can grow into new plantsAll seeds can grow into new plants
  • 11. Seed PartsSeed Parts  TheThe seed coatseed coat protects the seeds, like a coat weprotects the seeds, like a coat we would wear to keep us warmwould wear to keep us warm  The developing plant gets food from theThe developing plant gets food from the seedseed leafleaf  Why do you think seeds need to beWhy do you think seeds need to be scattered?scattered?
  • 12. Scattering SeedsScattering Seeds  Seeds are scattered by……Seeds are scattered by……  1. The wind (what kinds of seeds?)1. The wind (what kinds of seeds?)  2. Water2. Water  Animals (which animals do you think carryAnimals (which animals do you think carry seeds?)seeds?)
  • 13. The Life Cycle of a Flowering PlantThe Life Cycle of a Flowering Plant  Every living thing has a life cycle (We go fromEvery living thing has a life cycle (We go from infants, to child, teenager and adult)infants, to child, teenager and adult)  See diagram on pg. A 22-23See diagram on pg. A 22-23  Seeds grow in the center of the flower. After theSeeds grow in the center of the flower. After the petals dry up and fall off, seeds also fall to thepetals dry up and fall off, seeds also fall to the ground!ground!
  • 14. GerminationGermination  The seed soaks up the water and swells until theThe seed soaks up the water and swells until the seed coat splitsseed coat splits  A root begins to grow out of the seed down intoA root begins to grow out of the seed down into the soil and the stem begins to grow up!the soil and the stem begins to grow up!  This is calledThis is called germinationgermination when a tiny plantwhen a tiny plant begins to grow and develop!begins to grow and develop!
  • 15. SeedlingSeedling  A Seedling is a young plant that grows out of theA Seedling is a young plant that grows out of the ground/ point to the picture on pg. A23ground/ point to the picture on pg. A23  The Plant is fully grown and will look like theThe Plant is fully grown and will look like the parent plant (most flowers look similar)parent plant (most flowers look similar)  What would happen if a seed was planted in dryWhat would happen if a seed was planted in dry soil?soil?
  • 16. ConifersConifers  An Evergreen tree that makes cones is called aAn Evergreen tree that makes cones is called a Conifer.Conifer.  Conifers keep their leaves all year round!Conifers keep their leaves all year round!  The seeds grow inside the cone and when theThe seeds grow inside the cone and when the scales dry out the seeds fall out!scales dry out the seeds fall out!
  • 17. The Life Cycle of a ConiferThe Life Cycle of a Conifer  Seeds fall to the ground and some areSeeds fall to the ground and some are germinated or scattered by the windgerminated or scattered by the wind  A Seedling begins to grow and cones form onA Seedling begins to grow and cones form on the tree (usually in Spring). Seeds grow insidethe tree (usually in Spring). Seeds grow inside the POLLINATED cones.the POLLINATED cones.  Growth – the tree is fully grown! See pg. A24-Growth – the tree is fully grown! See pg. A24- 2525