Which statement about cytokinins is not true? a. They...

Which statement about cytokinins is not true? $a. $They promote bud formation in tissue cultures. $b. $They delay the senescence of leaves. $c .$ They usually promote the elongation of stems. $d. $They cause certain light-requiring seeds to germinate in the dark. $e .$ They stimulate the development of branches from lateral buds.

Which statement about cytokinins is not true?
$a. $They promote bud formation in tissue cultures.
$b. $They delay the senescence of leaves.
$c .$ They usually promote the elongation of stems.
$d. $They cause certain light-requiring seeds to germinate in the dark.
$e .$ They stimulate the development of branches from lateral buds.

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Key Concepts

Cytokinins

Cytokinins are plant hormones that regulate cell division and differentiation, promote bud formation, and delay the aging process in leaves. They are significant in tissue culture applications where inducing shoot formation is a priority, and they play a crucial role in lateral bud development over apical dominance.

Differentiation of Plant Hormones

Different plant hormones serve distinct functions. For instance, gibberellins are primarily responsible for stem elongation and seed germination, whereas cytokinins mainly promote cell division, bud formation, and delay senescence. Understanding these specific roles helps in recognizing that each hormone has targeted effects on plant growth and development.

Stem Elongation

Stem elongation is most commonly associated with gibberellins, not cytokinins. While cytokinins influence many growth processes, their primary functions do not include promoting the elongation of stems, making the statement that they usually promote stem elongation untrue.

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