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Weed

weed

(Science: botany) Any plant that is growing in a place where a human wants a different kindof plant or no plants at all. Any plant that crowds out cultivated plants.Clear of weeds; weed the garden.Plants that are considered a nuisance to man because they compete for resources in the same local environment as the crops we intend to grow for our own species. The weed may actually indirectly helping the crop by diverting pathogens that may otherwise.


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Re: Any other explanations other than Mutation?

... essentially unused, it has no selective pressure on it. Thus mutations to junk DNA are virtually impossible for natural selection to act upon or weed out. These mutations happen at a mathematically predictable rate (about once every billion replications, if memory serves), and we usually know ...

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by alextemplet
Sun May 10, 2009 7:51 pm
 
Forum: Evolution
Topic: Any other explanations other than Mutation?
Replies: 6
Views: 1742

Re: UVB Rays-Apple Decaying Rate.

HAhahha, we seriously need to "weed" people like this off the site.

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by Darwin420
Sun Nov 23, 2008 11:17 pm
 
Forum: General Discussion
Topic: UVB Rays-Apple Decaying Rate.
Replies: 10
Views: 921

Re: GM crops and canola

... are able to spend less money on chemicals and less time and effort applying them. Where GM crops provide more effective protection from pest and weed damage, farmers profit from higher yields and reduced risk of crop losses. Apart from these direct economic benefits, GM crops may further have ...

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by chousta
Sun Aug 17, 2008 8:48 am
 
Forum: Ecology
Topic: GM crops and canola
Replies: 2
Views: 1485

Re: Evolution

... do. Humans, and the dandelions on your front lawn, are evolving now in response to the changes that are occurring in our environments. That weed killer you spray on your lawn will kill most dandelions, but not all. The survivors possess some minor genetic difference that allows them to survive. ...

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by wbla3335
Fri Jul 25, 2008 8:40 pm
 
Forum: Evolution
Topic: Evolution
Replies: 36
Views: 5163

cell wall thickness of seeweed

... was wondering if any 1 Knows what The cell wall thicknesses are for Fucus vesiculosus fucus serratus (toothed wrack) Himanthalia Elongata (thong weed) or the average thickness for a lower shore sea weed. THNX in advance

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by Flanker
Tue Jul 08, 2008 4:31 pm
 
Forum: Cell Biology
Topic: cell wall thickness of seeweed
Replies: 0
Views: 529
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