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BIOLOGY 10 PIB > C3- Tropisms > Flashcards

C3- Tropisms Flashcards

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1
Q

Tropism

A

Growth response that results in plant organs curving towards or way from stimuli
-Positive Tropism- Towards
-Negative Tropism- Away

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2
Q

Phototropism

A

Darwin and Darwin Experiment: Determined tip of seeding detects light and sends signal down to the stem to control growth using transparent and opaque caps

Boysen-Jensen Experiment: Determined the signal is a mobile chemical because it passes through the permeable gelatine but not the impermeable mica

Frits Went Experiment- Determined auxin is the chemical messenger that cause elongation of cell on darker side

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3
Q

Gravitropism

A

Growth in response to gravity
-Roots display positive gravitropism
-Stems display negative gravitropism

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BIOLOGY 10 PIB (9 decks)

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