Name the plant part
a) Which bends in the direction of gravity but away from the light.
b) Which bends towards light but away from the force of gravity.
a. Root bends towards gravity of earth i.e. it is positively geotropic but it bend away from light so it is negatively phototropic.
b. Shoot bends towards light i.e. positively phototropic but bends away from gravity of earth so negatively geotropic.

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