EVALUATION

The Evaluation section closes the chapter with ten questions that sample across almost every topic covered above: interpreting a shoot-apex histogen diagram, the exarch/endarch/centrarch/mesarch vocabulary for primary xylem maturation, what controls sieve-tube activity in gymnosperms lacking companion cells, how vascular tissue is oriented in a leaf vein compared with the stem it branches from, why grafting depends on the presence of a vascular cambium, why sclerenchyma and tracheid cells end up dead at maturity, the five sclereid types, what a sieve tube actually is, and the anatom …