question_answer 43)

    The growth of tendril in pea plants is due to (a) effect of light              (b) effect of gravity (c) rapid cell divisions in tendrillar cells that are away from the support (d) rapid cell divisions in tendrillar cells in contact with the support

Answer:

                  (c) Tendrils are the thin thread-like growths on the stem or leaves of climbing plants. These are sensitive to touch of other objects (i.e., thigmotropic). When a tendril touches an object, then the side in contact with object grows slowly than its other side, (i.e., rapid ceil divisions in cells that are away from the support). This causes the tendril to bend towards the object by growing towards it, wind around object and cline to it.