Why do plant cells possess large-sized vacuoles?

Which cell organelle plays a crucial role in detoxifying many poisons and drugs in a cell?

Illustrate a plant cell as seen under an electron microscope. How is it different from an animal cell?

When a living plant cell loses water through osmosis,there is contraction of the contents of the cell away from the cell wall. What is this phenomenon called?

Which of the following can be crystallized?

$(a)$ What are the consequences of the following conditions?
$(i)$ $A$ cell having higher water concentration than the surrounding medium.
$(ii)$ $A$ cell having lower water concentration than the surrounding medium.
$(iii)$ $A$ cell having equal water concentration to its surrounding medium.
$(b)$ Name the materials of which the cell membrane and cell wall are composed.