question_answer 31)

  In botanical gardens and tea gardens, gardeners trim the plants regularly so that they remain bushy. Does this practic have any scientific explanation?

Answer:

                (a) IAA Indole acetic acid is the chemical name of auxin It is synthesised at the growing apices of the plant, e.g., shoot tip, leaf primordia and developing seeds. (b) Gibberellins It plays an important role in seed germination of plants and is synthesized in the apical shoot buds, young leaves, root tips and developing seeds. (c) Cytokinins This plays an important role in actively dividing cells and are synthesized mainly in roots, but syntheses also occurs in endosperm of seeds growing embryo and seeds etc.