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How do plants respond to their environments?

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  • Name three plant stimulus.
    Light, water, and gravity
  • What are some plant adaptations?
    Soft tissue, thick waxy coverings, losing leaves, bright colored flowers
  • Why do most trees in temperate forests lose their leaves in winter?
    to protect them from drying out in the cold winter air
  • What is a tropism?
    The RESPONSE OF A PLANT to something in its environment
  • The ____________ of plants to light, water, and gravity are tropisms.
    responses
  • Most roots grow ______________, the direction of gravity
    downward
  • Plants also show tropisms to _______________ and _______________.
    chemicals ; heat
  • Most stems grow ___________, away from gravity.
    upward
  • How does a tree without leaves make food?
    It can't. It uses stored food it starts making in spring when it has leaves
  • How does a plant respond to a stimulus?
    It changes it's direction or pattern of growth
  • How do plants respond to light?
    They grow toward the source of light
  • How do plants respond to water?
    Their roots grow toward the water source.
  • What is a stimulus?
    SOMETHING in an ENVIRONMENT CAUSING a LIVING THING to RESPOND
  • Why do plants need adaptations?
    to save water, and attract pollinators
  • Respond means to ______________.
    react
  • What causes a tropism?
    A chemical all plants use to grow.
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