Which of the following features differentiates a dicot stem from a monocot stem? . a. the presence of a distinct pith and cortex in a monocot stem and an undifferentiated ground tissue in dicot stem. b. the presence of a distinct pith and cortex in a dicot stem and an undifferentiated ground tissue monocot stem. c. the presence ofconjoined vascular bundles in a dicot stem and radial vascular bundles in a monocot stem

Some species of wasps are social. the queen starts a colony from scratch each spring. she builds a small nest, and lays and raises a group of female workers. the workers enlarge the nest while the queen continues to lay eggs. unfertilized eggs become males that mate with newly hatched females. all of the wasps except the newly fertilized females die by the summer. which best describes this behavior? a)it is beneficial only to the males that do not fertilize eggs. b)it is beneficial only to the female workers that are not fertilized. c)it is beneficial to each one of the individual colony members. d)it is beneficial to the whole species, but not to all of the individual members.