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