(a) What Is The Stimulus In Being Of Stem Toward s Light ?
(b) Give The Scientific Terms Used To Represent The Following
(i) Bending Of Shoot Towards Light
(ii) Growing Of Roots Towards Earth
(iii) Growth Of Pollen Tube.
(c) What Is Meant By Hydrotropism?
(d) Is Bending Of Stem Towards Light A Growth Dependent Movement OR Growth Independent Movement?

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Solution

(a) The stimulus that results in bending of stem towards light is light.
(b) Bending of shoot towards light - Phototropism
Growing of roots towards earth - Geotropism
Growth of pollen tube - Chemotropism
(c) Hydrotropism is the growth of roots towards the water source.
(d) Bending of stem towards light is growth dependent movement.

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