Force & Tropism Key Terms Flashcards

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1
Q

Stimulus

A

An action or condition that provokes a response

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2
Q

Response

A

A change in a system resulting from a stimulus

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3
Q

Turgor pressure

A

the force of water molecules against the cell wall that allows plants to stand up straight.

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4
Q

Tropism

A

plant growth toward or away from an external stimulus

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5
Q

Geotropism

A

The response of a plant to gravity

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6
Q

Positive Geotropism

A

plant growth towards gravity

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7
Q

Negative Geotropism

A

plant growth away from gravity

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8
Q

Phototropism

A

the growth of a plant toward or away from light

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9
Q

Homeostasis

A

an organism’s ability to maintain steady internal conditions when external conditions change

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