Examlex
Which of the following is NOT a major terrestrial biome of Earth?
Lignin
A complex organic polymer found in the cell walls of many plants, making them rigid and woody, and contributing to their structural support.
Meristem
A region in plants where cell division occurs, leading to growth and development.
Plasmodesmata
In plants, cytoplasmic connections in the cell wall that connect two adjacent cells.
Protoderm
The outermost layer of cells in the early embryo of plants, which develops into the epidermis.
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