Explain movement in fern​

One of the most typical ways that plants like ferns move is through a process known as phototropism. Essentially, they move and grow towards light .Plants may also move or grow in response to other stimuli, in addition to light. They can grow or move in response to physical touch, in response to a chemical, or toward warmth

i would have to say autosomal

meteorologists would compare a new weather map with one 24 h old to see how fast a front is moving.