plant hormones

Cards (9)

what do plant hormones make sure of?
they make sure plants grow in the right direction
what is auxin? 
a plant hormone that controls growth near the tips of shoots and roots
what does auxin control?
controls the growth of a plant in response to light (phototropism) and gravity (gravitropism)
what can unequal distributions of auxin cause?
it can cause unequal growth rates in plants rooted and shoots
what is phototropism? 
the growth of a plant in response to light
how does gravitropism cause a shoot to grow upwards?
gravity has produced an unequal distribution of auxin in the tip of the shoot, with more auxin on the lower side. this causes the lower side of the shoot to grow faster, so the shoot bends upwards
which plant hormone is used to grow cells in a tissue culture?
auxin
what does it mean if a seed is said to be dormant?
the seed won't germinate until it has been through the right conditions
explain how plant hormones can be used to improve the growth of plants from cuttings?
a rooting powder that contains auxins can be added to the cut end of the cuttings so the plant grow rapidly