Which of the following trees are most common in boreal forests?

Boreal forests, also known as taiga, are characterized predominantly by their cold climate and long winters, which influence the types of trees that thrive in such conditions. Coniferous trees, which have needle-like leaves and cones, are particularly well adapted to the harsh environmental factors found in boreal regions. They are able to conserve water and withstand heavy snowfall, which is a frequent occurrence in these forests.

Species like spruce, fir, and pine are dominant in boreal forests due to their resilience and ability to photosynthesize during the short growing season. This adaptation allows them to extend their growing period even in less-than-ideal conditions, giving them a significant advantage over other types of trees.

In contrast, deciduous trees typically lose their leaves in the winter, which can be a disadvantage in boreal climates where a longer period of dormancy would limit their growth. Tropical hardwoods thrive in warm, humid conditions and are not found in boreal ecosystems at all. Similarly, ornamental trees are often cultivated in specific horticultural settings and do not naturally populate the boreal forest biome. Thus, coniferous trees are most representative of boreal forests, making this option correct.