An Review on Recent Advancements of Terminalia Arjuna IJPS Journal Auxin is a plant hormone that plays a major role in plant growth and development. It is mainly produced in the apical meristems (growing tips) of shoots and young leaves. Auxin promotes Zaporizhzhia nuclear plant: Ukraine and Russia trade blame over fire Color Me a Rhyme Astra Publishing House my favorite black plants that are super easy to grow The Beige House How do coconuts grow? From a simple seed to a tall palm.