Example -unicellular. Algae, or plant-like protists, have characteristics of plant cells.Examples: Chlamydomonas (unicellular), Volvox and kelp (both multicellular).
It is the penetration of water through a substance . It takes place in cells , and also in your water filter (reverse osmosis)
Hope this helps
Osmosis is the process of transmission of particles from one place to another place with a membrane
examples :absorption of water by roots of plants from earth, in respiration
it helps in absorption of water from roots
by the process called human reproduction