Synthetic compounds that, when supplied to plants, trigger responses nearly identical to endogenous natural hormones are called______________?
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Answer: B. Plant growth regulators
Explanation
Plant growth regulators are synthetic or natural chemical compounds that mimic endogenous hormones. These substances trigger physiological responses in plants nearly identical to those caused by natural hormones. Horticulturists apply them to control growth habits, flowering times, and fruit ripening processes. Endogenous plant hormones include auxins, gibberellins, cytokinins, ethylene, and abscisic acid. Synthetic growth regulators often possess greater chemical stability than natural plant hormones. Applying these compounds alters cellular elongation, division, and organ development in crops.
Agricultural producers use growth regulators to prevent lodging in cereal crops by shortening stem lengths. Fruit growers apply synthetic auxins to prevent premature fruit drop before the harvest season. Rooting powders containing synthetic hormones are widely used by gardeners to propagate plant cuttings. Plant harmonics is not a recognized scientific term used in agricultural plant physiology. Photoperiodism activants refers broadly to light-sensing responses rather than synthetic hormone analogs. Plant growth promoters are a narrower subcategory, whereas regulators encompass both promoters and inhibitors.
- Subject
- Agriculture
- Category
- Agriculture
- Topic
- —
- Difficulty
- medium
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