Why do stems "close" their leaves? - The Planted Tank Forum
 
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post #1 of 8 (permalink) Old 07-14-2005, 09:14 PM Thread Starter
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Why do stems "close" their leaves?

I'm just curious... I have l. glandulosa and when the lights turn off the newer leaves point upwards and in the morning before the lights come on the leaves are pointing down. Then they become horizontal again and then upwards again... Why flap them around so much?

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post #2 of 8 (permalink) Old 07-14-2005, 09:33 PM
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They open to catch more light. They close to signify that they've had enough light.
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post #3 of 8 (permalink) Old 07-14-2005, 09:44 PM Thread Starter
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But why are they pointing down in the morning? Searching for light?

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post #4 of 8 (permalink) Old 07-14-2005, 10:02 PM
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Might be a defensive mechanism?
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post #5 of 8 (permalink) Old 07-14-2005, 10:12 PM Thread Starter
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Snailpoo hahaha that's a great name...

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post #6 of 8 (permalink) Old 07-14-2005, 10:50 PM
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Hell if I know.
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post #7 of 8 (permalink) Old 07-15-2005, 02:28 PM
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Hey Stuk. Good to see another South African on here
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post #8 of 8 (permalink) Old 07-15-2005, 05:13 PM Thread Starter
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Umm well sorta I wasn't born here so lets say I'm proudly "South African".

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