Fall 2000 Review 4 Know major characteristics, and common names, of each of the groups of fungi. What is a meristem or meristematic tissue, and where is it found. T F Bulbs are modified flowers.
Tubers are modified stolons.
Spines and thorns are highly modified leaves. Phloem is produced to the outside of the cork cambium. Cacti have evolved to not have leaves. Bundle scars form when a leaf is lost. Veins contain mesophyll.