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how does gravity affect root growth? why?

lilliana

wrote...

Posts: 19

Rep:

10 years ago

how does gravity affect root growth? why?

i would like to know why it happens because i cannot find it any where else and i need to know for my Science fair project.

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tonyekwe

wrote...

#1

10 years ago

I have a feeling this is not known precisely. Probably the plant hormone Indole-3-acetic acid plays a role. There is a mutation in corn known as 'lazy' which causes the shoot not to sense gravity, it grows prostrate along the ground, neither going up nor down. As far as i know the nature of this mutation is not known

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