PLANT PHYSIOLOGY
PLANT GROWTH
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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auxin=stimulates stem elongation
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ethylene=fruit maturation
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cytokinin=drought tolerance
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absisic acid=promote root growth
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Detailed explanation-1: -Ethylene is a gaseous plant hormone that plays an important role in inducing the ripening process for many fruits, together with other hormones and signals. An unripe fruit generally has low levels of ethylene. As the fruit matures, ethylene is produced as a signal to induce fruit ripening.
Detailed explanation-2: -Ethylene is regarded as a multifunctional phytohormone that regulates both growth, and senescence. It promotes or inhibits growth and senescence processes depending on its concentration, timing of application, and the plant species.
Detailed explanation-3: -Ethylene has many functions, and its major functions are associated with senescence, or aging. This includes fruit ripening, flower wilting, and leaf and fruit abscission.
Detailed explanation-4: -Abscisic acid (ABA) and ethylene are the major regulators of ripening and senescence in both dry and fleshy fruits, as demonstrated by numerous ripening-defective mutants, effects of exogenous hormone application, and transcriptome analyses.