The channels indicated by the pointer, are a structure of a root. the arrow indicates a channel between the cell from the outer layer of the root and the cell from the inner one.
a. desmosomes
b. plasmodesmata
c. mycorrhizae
d. tight junctions
e. gap junctions

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.

explanation:

more words for this could be abiotic and biotic

abiotic: living organisms within an ecosystem

biotic: non-living organisms within an ecosystem

d. organisms have cells with different shapes and functions.

i believe the answer is snake.