Exam 25: Plant Nutrition and Transport

Researchers conducting a study of leaf cell structure observe water entering the cells of a leaf from droplets on its surface.They conclude that the leaf cells have

Ion exchange allows plant roots to

The evaporative loss of water from the leaf is called

Plants acquire minerals

The energy that drives water into root cortex cells comes most directly from

In most plants,the stomata at night are _______ in order to _______.

If you were working in the lab with nitrogenase,and the nitrogenase stopped catalyzing the reaction,you might need to eliminate or reduce the _______ in the experimental system to get it working again.

In the legume-rhizobia symbiosis,the _______ partner produces leghemoglobin to maintain _______ levels for the other partner.

Which of the following represents the correct order for the locations where rhizobia develop as a root nodule is being formed,from earliest to latest in the development?

Chemical weathering,an important part of soil formation,includes the

Most soils can have as many as _______ horizons.

The tension required to move water up the stem is generated from the

Which statement about mycorrhizae is true?

Endodermal cells differ from other root cells in that they

The part of the root that is most important for building the bulk of a root nodule is the

In almost all plants,roots get most of their oxygen from

The process of nitrogen fixation is the

According to the pressure flow model for translocation,

Where would you look to find the Casparian strips in a prepared microscope slide of root tissue?

The unbroken column of water from the roots to the highest leaves is kept intact by