Plants on the move …..
by Lewis, 25 April, 2019, 1 comments
In 1880, Darwin wrote a book entitled “The power of movement in Plants” in which he described many examples of the “sleep movement’ of plants. He noted that some flowers closed up at night (e.g. crocuses, tulips, poppies), whilst other plants had leaves that moved or closed up at night time. He recorded that the pea and bean family (legumes / fabaceae) had a number of species that exhibited these ‘sleep movements”.
Movement in plants is achieved either through growth or through changes in the water content of cells (the turgidity of cells). Phototropism is an example of an irreversible growth response Read more...
