The movement of plant organs in response to light is called:

Ratio of . . . . . . and . . . . . . plant hormones and their interactions control the morphogenic differentiation.

Thigmotropism is the response of the plant to

Match column-$I$ with column-$II$ and select the correct option using the codes given below.

Column-$I$	Column-$II$
$A$. Cytokinin	$i$. Stimulates closure of stomata
$B$. Ethylene	$ii$. Increases stem length
$C$. Gibberellin	$iii$. Promotes lateral shoot growth
$D$. Abscisic acid	$iv$. Found in large amounts in tissues undergoing senescence

Which one of the following pairs of plant hormones inhibits flowering in some plants?

Study the following statements.
$I.$ "$X$" hormone promotes root growth and root hair formation, thus helping the plants to increase their absorption surface.
$II.$ "$Y$" hormone induces flowering in mango and also promotes rapid internode/petiole elongation in deep-water plants, hence helping leaves or upper parts of the shoot remain above water.
$III.$ "$Z$" hormone inhibits seed germination, increases the tolerance of plants to various stresses, and plays an important role in seed development, maturation, and dormancy.
Identify the correct names of hormones marked as $X$, $Y$, and $Z$.