How are algae cells different from other cells

In the case of the algae, each individual cell is responsible for absorbing its own water. This makes the algae nonvascular compared to the highly vascular plant species. In this connection, algae also lack several key structures that are normally present in ordinary plants like the leaves, roots and stem.

i think the answer is

mass

this is a good question! i'll do some research and come back when i have the answer!