Through their effect on plant growth regulators, what do the temperature and light control in the plants? (AIPMT-2012 Mains) A. Apical dominance B. Flowering C. Closure of stomata D. Fruit elongation
Option B. Through the use of plant growth regulators, temperature and light regulate flowering in plants. Vernalization and photoperiodism are the terms used, respectively. For example, plants with long days need to be exposed to light for longer than the crucial period, whereas plants with short days need to be exposed to light for shorter than the critical period. Vernalization, a time of low temperature required by some plants to trigger blooming, is the process.
