force and tropism terms Flashcards

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 plant 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 ability to maintain steady internal conditions when external conditions change

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