Write one example each of the following tropic movements?
i) Positive phototropism
ii) Negative phototropism
iii) Positive geotropism
iv) Negative geotropism
v) Hydrotrpopism
vi) Chemotropism

Explanation

i] Positive phototropism: shoots growing towards light.
ii] Negative phototropism: roots growing away from light towards ground.
iii] Positive geotropism: growth of roots towards earth due to the pull of the earth.
iv] Negative geotropism: shoots growing away from the earth.
v] Hydrotropism: roots growing towards the source of water.
vi] Chemotropism: growth of pollen tubes towards the ovules.