Exam 17: Structure of Plants

While working in the field you come across a small, unknown plant. Upon closer inspection you note that it has small, scale-like leaves and a thick cuticle. From these observations, what type of habitat is this plant most likely to be found in?

Under conditions such as high humidity, transpiration can be limiting. Under such conditions, what important role would a pore-like structure play, and what is the name of such a structure?

The endodermis is

A cross-section of a structure that was identified as plant material was found in a thin section of rock. The plant structure was round in cross-section, with a central pith of parenchyma surrounded by metaxylem. The metaxylem was to the inside of the protoxylem and areas of primary phloem alternated with the many arches of primary xylem. The section is most likely to be of a

In plant stems, the stele is the