Dr. F. Went noted that if coleoptile tips were removed and placed on agar for one hour, the agar would produce a bending when placed on one side of a freshly cut coleoptile stumps. Of what significance is this experiment.

Period between formative phase and maturation phase of plant growth is

Cholodony and Went effect is due to

The cells derived from meristems differentiate and regain the capacity to divide by a phenomenon called

Shedding of leaves, flowers and fruits due to change in hormone balance in plants is

During seed germination, its stored food is mobilised by

Which of the following plant function is not controlled by auxins?

Abscisic acid is called stress hormone as it

Which is not a function of cytokinin?

Horizontal growth of seedlings, swelling of axis and apical hook formation in dicot seedlings is brought about by

One hormone hastens the maturity period in juvenile conifers, a second hormone controls xylem differentiation while the third increases the tolerance of plants to various stresses. They are respectively

Cytokinin is not found in

Which is not the effect of ethylene?

Which statements are correct?

Which of the following is the effect of a plant hormone, which is synthesised more in absence of light?

Growth hormone that speeds up malting in brewery industry is

Transport of cytokinin in the plant body is

Cytokinins which have specific effect in cytokinesis are modified forms of

Plant hormones used for inducing morphogenesis in plant tissue culture is

Two different plants associated with discovery of two different phytohormones having common biosynthetic precursor exhibit one of the following characters each