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What makes a Plant a Plant? - PowerPoint PPT Presentation


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What makes a Plant a Plant?. Plant Characteristics How are Plants Classified. Plant Characteristics. They make their own food Chloroplasts contain chlorophyll Chlorophyll absorbs energy from the sun Plants use the energy to make food - glucose (sugar) Process is called Photosynthesis.

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what makes a plant a plant

What makes a Plant a Plant?

Plant Characteristics

How are Plants Classified

plant characteristics
Plant Characteristics
  • They make their own food
    • Chloroplasts contain chlorophyll
    • Chlorophyll absorbs energy from the sun
    • Plants use the energy to make food - glucose (sugar)
    • Process is called Photosynthesis
plant characteristics4
PlantCharacteristics
  • Plants Have a Cuticle
what is a cuticle
What is a Cuticle?
  • A waxy layer that coats the surface of stems, leaves, and other plant parts exposed to the air.
  • Keeps plants from drying out.
plant characteristics6
PlantCharacteristics
  • Plant Cells have Cell Walls
what is a cell wall
What is a Cell Wall
  • a plant cell is surrounded by a rigid cell wall
  • outside of the cell membrane
  • helps support and protect the plant
plant characteristics8
Plant Characteristics
  • Plants reproduce with spores and sex cells
    • there are two stages in a plants life:
      • sporophyte
      • gametophyte
what is a sporophyte
What is a Sporophyte?
  • A plant in the spore producing stage of life.
  • Spores can grow directly into an adult plant
what is a gametophyte
What is a Gametophyte?
  • The stage in a plant’s life where it produces male and female sex cells.
more on gametophytes
More on Gametophytes
  • Male and female sex cells must join in order to grow into a new plant. This is called Fertilization.
how are plants classified
How are Plants Classified?
  • There are more than 260,000 species of plants.
  • They can be divided into two groups:
    • Nonvascular
    • Vascular
how are plants classified13
How are Plants Classified?
  • Nonvascular Plants:
    • have no pipes to transport water and nutrients
    • depend on diffusion and osmosis to move material from one part of the plant to another
    • They have to be small: mosses, liverworts
how are plants classified15
How are Plants Classified?
  • Vascular Plants
    • Have tissues that deliver needed materials throughout a plant - called vascular tissues.
    • Can be almost any size.
    • Are divided into gymnosperms and angiosperms
how are plants classified16
How are Plants Classified?
  • Gymnosperms -- non-flowering plants
  • Angiosperms -- flowering plants