So whatís a plant?
Almost all plants are photosynthetic
- Exceptions: a few saprophytic plants, such as ìIndian pipeî
Cell walls made of a carbohydrate, cellulose
- When this is mature, it prevents a plant cell from expanding in size
- Many functioning plant cells are deadóthe cell wall is all thatís left
Growth at the tips of roots and shoots, in meristems
- Special zones of immature cells without thick cell walls. Cells in meristems can expand, divide and grow.