What is the primary function of auxin in plants?

In parthenocarpic fruits,the enlargement of the ovary into a fruit is brought about by the auxin . . . . . . .

Maximum amount of growth in roots occurs due to

What is the mechanism underlying the phenomenon by which the terminal/apical bud suppresses the growth of lateral buds? Suggest measures to overcome this phenomenon.

Which of the following ions is pumped into the apoplast by auxin during cell growth?

Give scientific reasons: Auxins fail to enhance the growth of intact plants.