Talk:Heliotropism
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IIRC, the petals of the the flowers do not contain chlorophyll. Heliotropism, therefore, seems rather pointless. The flowers do not gain anything from following the Sun and obviously spend some energy. Why do they do that?
In The Private Life of Plants it is shown how the flowers of polar poppy follow the Sun during the polar day. The presenter says that the flowers need the "warmth" and so follow the sun 24 hours a day 360 degrees. He says that this helps to grow the seed in the middle of the flower, but I am not sure it's a fully satisfactory explanation.
Any comments on that? Paranoid 22:00, 15 Jun 2005 (UTC)
- Yes. Articles should not refer to their talk pages unless there's a dispute of some sort going on. If you don't know something, don't put it in an article. Wait until you have references of some sort and then put it in. The documentary probably doesn't qualify, but surely somewhere someone has a theory on heliotropism we can reference. JRM ยท Talk 00:57, 2005 Jun 18 (UTC)
[edit] Difference with Phototropism
Is this not the same as phototropism? Perhaps the two articals should be merged? RandomIdiot 10:07, 22 June 2006 (UTC)
It is different. I added some edits that hopefully make the difference clearer. Ceinturion 23:54, 10 July 2006 (UTC)
heliotropism doesnt involve growth whilst phototropism does user: a grade 8 student
[edit] Heliotropism in humans
How about heliotropism in humans? (posted by user:213.228.0.12 on January 7 2006)
- No - pretty much by definition, tropisms only occur in plants. Humans can be sensitive to the sun, yes, but that's not the same thing. DS 15:30, 26 April 2006 (UTC)
