Pennsylvania State University TURF 100 Quiz 3 1)Which of the following represent the main structural parts of a grass tiller? shoot, roots, and crown leaf blades, leaf sheaths, and crown it’s a series of nodes and internodes leaves and roots auricles, ligules, and collar     Which of the following plant parts contain meristematic regions that give rise to leaves, roots and daughter tillers? crowns roots sheaths tillers shoots             According to Turgeon, which of the following leaves has the highest level of photoassimilate production? newly emerging leaves young fully expanded leaves mature leaves oldest leaves senescing leaves