Living things share some common c. They need a, water and . They can m, respond to , grow and . Living things share another common characteristic - they are all made up of c. They are the blocks of life and a cell is a unit of life. Simple life forms such as b are made up of cells too and some of them are made up of only one cell; complex life forms like flowering plants and human beings are made up of millions of cells. Organisms that made up of only one cell are the y, b and p.

A plant has different types of cells. These cells share many common characteristics but may be slightly different because different cells carry out different . Hence, a leaf cell has many present because these are required for photosynthesis whereas chloroplasts are nonexistent in plant cells from other parts of the plant, e.g. the roots.

A cell to produce new cells and that this division is necessary for an organism to grow. After a cell grows to a certain size, it makes a copy of its and divides into two.