Chemical Coordination in Plants — Important Questions
ICSE · Class 10 · Biology
42 important questions from Chemical Coordination in Plants for ICSE Class 10 Biology, with answers. Written for the board exams 2027.
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See them allImportant Questions from Chemical Coordination in Plants
Which of the following are growth promoting hormones in plants?
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Auxin, Gibberellin, Cytokinin
Auxin, Gibberellin, and Cytokinin are growth promoting hormones. Ethylene and Abscisic acid are growth inhibiting hormones.
Which hormone is known as the anti-stress hormone in plants?
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Abscisic acid
Abscisic acid (ABA) is called the anti-stress hormone because it induces closure of stomata during water stress, protecting plants from desiccation.
Which of the following functions are performed by cytokinin?
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Promotes cell division, Delays senescence, Opposes apical dominance
Cytokinin promotes cell division, delays aging (senescence), and opposes apical dominance. Fruit ripening is caused by ethylene, and stomatal closure by ABA.
IAA stands for:
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Indole Acetic Acid
IAA stands for Indole Acetic Acid, which is the most abundant and powerful naturally occurring auxin in plants.
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