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

To induce flowering in Litchi and Pineapple,which hormones are used for foliar spray?

Which of the following is $NOT$ an effect of $Auxin$?

$A$: If a plant is kept horizontally,auxin accumulates on the lower surface.
$R$: Displacement of statoliths and other cell organelles to the lower surface modifies the translocation pattern of auxin.

$I.$ Cell elongation
$II.$ Cell division
$III.$ Cell differentiation
Among the above mentioned,what is/are the function$(s)$ of auxin?

Auxins are growth hormones capable of promoting cell elongation. They have been used in horticulture to promote growth,flowering,and rooting. Write a line to explain the meaning of the following terms related to auxins:
$(a)$ Auxin precursors
$(b)$ Antiauxins
$(c)$ Synthetic auxins