Final answer:
The taiga, or boreal forest, is marked by cold, moist winters with gymnosperms as the dominant trees, making statement C false.
Step-by-step explanation:
The taiga, also known as the boreal forest, is characterized by long, cold, moist winters and short summers, and is dominated by gymnosperms, commonly coniferous trees such as pines, spruces, and larches. The taiga biome is known for its coniferous forests as gymnosperms are well adapted to the cold climate. Deciduous trees are not the dominant plant in this biome; rather, they are characteristic of a temperate forest biome which has moderate rainfall and temperatures. Therefore, the statement C. Boreal forests are dominated by deciduous trees is false, as boreal forests are primarily composed of coniferous trees.