Describe the concentration gradient that
must be present for the oxygen and
carbon dioxide to move from one location
to another.

it has one origin of replication, but it proceeds in two directions - d)

one is through turgidity. this occurs before ground tissue ( collenchyma

and sclerenchyma cells) become well

developed to give structural support to the plant as it grows bigger. the xylem

tissue (composed of rigid tissue) of the young

plant render this support and also maintaining osmotic turgidity of the surrounding

plant cells.