Answer:
you....your not asking anything?
The movement in phloem is bidirectional, whereas, in xylem cells, it is unidirectional (upward).
The answer is b) "No known sexual mode of spore formation
Individual, population, community, biome, ecosystem
A pathogen is a disease carrying vector that has the ability to spread using a variety of different mechanisms. A pathogen that is a contagion has the ability to spread through touch. An example of such a pathogen would be the one that results in staph infections.