Chapter 25

Distinguish between the following: leaf primordium and bud primordium; leaf trace and leaf trace gap; simple leaf and compound leaf; separation layer and protective layer; closed vascular bundle and open vascular bundle.

By means of simple, labeled diagrams, compare the structure of a eudicot root with that of a eudicot stem at the end of primary growth. Assume that the root is triarch and the vascular cylinder of the stem consists of a system of discrete vascular bundles.

The term "shoot" serves as more than just a collective term for the stem and its leaves. Explain.

Explain why the mesophyll tissue is particularly suited for photosynthesis.

What are the principal roles of the major and minor veins of leaves?

Structurally, how do sun leaves differ from shade leaves?

What is the role of the \(L E A F Y\) gene in floral development?