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Investigation to find out if Stinging Nettles in undisturbed areas have less stingers (trichomes) than nettles grown in grazed grassland.
Member rating: No Rating | Words: | Submitted: Wed Mar 24 2004
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Investigation to find out if Stinging Nettles in undisturbed areas have less stingers (trichomes) than nettles grown in grazed grassland. Aim: The aim of the investigation is to find out whether there is a significant difference between the number of trichomes on leaves of nettles (Urtica dioica) grown in grazed and ungrazed fields. Theory: This theory is being investigated because nettles in grazed grass areas would need to build up a high defence to protect themselves from being destroyed. Therefore they would adapt to produce a larger number of trichomes per leaf to help protect them from grazing animals. Nettles growing in grass land that is not grazed do not need to reproduce in this way, as they are rarely subjected to grazing. It is suggested that when a nettle has lost leaves from grazing, the new leaves that grow on the plant are produced with more stingers. In my investigation, these stingers will...
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