Plant Growth an...

In plants "Auxin" is used for _______________.

Auxin is a phytohormone which is synthesized in the tips of plant shoots In an experiment a young shoot was taken and placed in a box Light was allowed to reach towards it only from a hole Which one of the following diagrams correctly depicts the movement of auxin after one hour exposure to light?
[X is the region where auxin is formed]

Hormone concerned primarily with cell division is 

Choose the right from the following.

i. In light, hormone auxin, helps the cells to grow longer in plants .
ii. Plant hormone gibberellins helps in growth of a stem.
iii. Cytokinins inhibits cell division.
iv. Abscisic acid promote growth in plants.

In Hibiscus, plants grow from

Bolting in some plants is induced by artificial treatment with which of the following plant hormones?

Plants are attracted to light through the hormonal action of

Treatment of seeds at low temperature under moist conditions for breaking their dormancy is ?

The hormone present in higher concentration in fruits and seeds is

Which one of the following nutrients is concerned with the growth of the plants in view of their role in synthesis of auxin ?