Plant cells have what is perhaps the most complex outer coverings. Plant cell walls are made largely of cellulose which forms strong, highly rigid, almost indigestible coverings that protect the cell and gives it shape.
Hello there :)
I am quite sure this is a true/false question
This statement is false.
Yes, the cilia and mucus in the trachea does sweep upward, however, it moves the mucus towards the pharynx where it is swallowed not towards the nose where it is sneezed out.