Mutations in the teaA (“TEE-A”) and teaR (“TEE-R”) genes in A. nidulans result in these structures to exhibit zigzag and curved phenotypes, respectively. These structures’ growth is directed by the Spitzenkörper (“SPIT-sen-kor-pur”) organizing center. (15[1])After reaching one location, several thigmo⋅differentiating (15[1])signals induce these structures to flatten and sharpen their tips into appressoria. In one group of organisms, these structures force themselves through the apoplast to form an (15[1])inward-growing network known as a (*) Hartig net. Arbuscules (“AR-bus-kewlz”) are formed by the penetration and branching of these structures into (-5[1])a plant’s root cells. Vegetative growth is mainly facilitated by these structures, which often aggregate to form the mycelium (“MAI-see-lee-um”) body. For 10 points, name these (10[2])fungal filaments. ■END■ (10[3])