Describe the internal structure of wheat stem?

The stem consists of three tissue structures, all of which are composed of basic cell forms, including the epidermis, vascular, and field tissue. The xylem and phloem bring the length of the stem up and down with water and nutrients and are arranged in various strands called vascular bundles.

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the transfer of energy between two molecules spaced just nanometers apart plays a key role in many technologies, including photovoltaics, quantum information systems, lighting, and sensors, as well as in biophysics to measure nanometer distances and in photosynthesis. but an open question in this area is what effect, if any, the surrounding photonic environment has on this nanoscale energy transfer. by designing and performing a carefully controlled experiment to answer this question, scientists have settled the debate and found clues to improving the efficiency of many of the technologies that rely on this process.

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a population changes in response to a change in the environment.