Help!I help with phototropism and auxism for triple aqa science please!?

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if the plant tip is covered, what direction will it grow?

Posted Fri 7th September, 2012 @ 21:17 by anum

5 Answers

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Oh god this is all the way back to B5.

From what I remember (looking through my book of useless-ness), if the tip is covered then auxin will be produced is all the parts of the plant, hence meaning that all the parts will grow.

Not sure if that answers your question but hope it helps :)

Answered Sat 8th September, 2012 @ 00:21 by Red
Edited by Red on Sat 8th September, 2012 @ 00:21
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thanks! yeah it does answer my fail of a question

Answered Sat 8th September, 2012 @ 21:07 by anum
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No problem. I gave google a search on that too, and found something on bitesize about that. ;)

Answered Sun 9th September, 2012 @ 00:25 by Red
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you do that at GCSE? thats A level stuff

Tropism: a plant's growth response to a external stimuls
A phototrophism is the plants response to light

Auxins are produced in the tips of shoots in plants
for phototropisms- auxins will move to the side of the stem in the shade and causes cell elongation. this results in uneven growth and the shoot to bend towards the light.
Auxins stimulate the growth of the apicla bud. if the tip is removed then no more auxins are produced so the auxin conentration is lower resulting in the growth of side shoots to a plant 

Just had a look at BBC bitesize- it's actually wrong for some of it:/

but hope that makes sense:) ask if you have any questions

Answered Fri 14th September, 2012 @ 19:25 by Alex
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hi check out my resource 

plant hormones - thomas lawrence.

all u need to know and if that doesn't help comment on it to tell me wat to improve on and ill reply to u asap

Answered Mon 24th September, 2012 @ 16:57 by Thomas Lawrence