thermoperiodism
/ˌθɜrmoʊˈpɪriəˌdɪzəm/
noun
- The response of a living thing, especially a plant, to regular changes in temperature, such as between day and night or between seasons.
- Thermoperiodism helps some plants know when to flower based on cooler nights.
- Scientists study thermoperiodism to improve crop growth in different climates.
- The seeds of certain trees rely on thermoperiodism to germinate at the right time of year.