(a) Geotrophism
(b) (i) The root will bend downwards while the shoot will bend upwards.
(ii) Force of gravity causes auxins to migrate and accumulates on the lower side of growing shoot and root. High concentration of auxins in the shoot promotes faster growth but inhibits growth in the root. Lower side of the shoot grows more while the upper side in the root grows more
(c) (i) Bean seedlings will grow horizontally.
(ii) The klinostat rotates the seedling nullifying the effect of auxins migrating and accumulating on the lower side of the root and shoot.
johnmulu answered the question on May 19, 2017 at 07:05
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