Control of Tropism by IAA

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What is tropism?
a growth movement of a plant in response to a directional stimulus.
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Positive tropism is...
Towards a stimulus.
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Negative tropism is...
Away from a stimulus.
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Phototropism is?
a growth response to light.
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Geotropism is?
A growth response to gravity.
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The SHOOT of a plant is .......... geotropism and ........ phototropism
negatively geotropic and positively phototropic.
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What are advantages of a plant being phototropic?
Traps more light for photosynthesis.
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What are the advantages of a plant being geotropic?
The shoot of a germinating seed grows out of the soil, and there are more chances for pollination or seed dispersal.
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Advantages of a root growing towards gravity?
To anchor the plant, To search for water, To ensure the root of a germinating seed always grows downwards whatever the position of the seed.
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Other cards in this set

Card 2

Front

Positive tropism is...

Back

Towards a stimulus.

Card 3

Front

Negative tropism is...

Back

Preview of the front of card 3

Card 4

Front

Phototropism is?

Back

Preview of the front of card 4

Card 5

Front

Geotropism is?

Back

Preview of the front of card 5
View more cards

Comments

yogini.palmer

saved me a few minutes, thanks :)

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