Associations to the word «Photoperiodism»

Wiktionary

PHOTOPERIODISM, noun. (biology) the growth, development and other responses of plants and animals according to the length of day and/or night

Wise words

Occasionally in life there are those moments of unutterable fulfillment which cannot be completely explained by those symbols called words. Their meanings can only be articulated by the inaudible language of the heart.
Martin Luther King Jr.