Most boreal forests are dominated by ________ .

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BlackTom AI · Accepted Answer

To begin, let's examine the environmental context of boreal forests and what their typical vegetation looks like.
Option 1: coniferous evergreen trees. This is the correct characterization of boreal (taiga) forests, which are dominated by conifers such as spruces, pines, and larches that retain needles year-round and are well adapted to cold climates and nutrient-poor soils.
Option 2: narrow-leaf deciduous trees. While some deciduous trees can be found in boreal regions, the dominant canopy is not deciduous and narrow-leaf varieties; boreal forests are primarily coniferous, with evergreen needles better suited to short growing seasons.
Option 3: shrubs. Boreal forests contain shrubs, especially in the understory or in transition zones, but they are not the primary canopy form; the main tree layer is made up of coniferous trees, not shrubs.
Option 4: broad-leaf deciduous trees. Broad-leaf deciduous trees are typical of temperate forests, not the boreal zone. In boreal regions, cold temperatures favor evergreens with needle-like leaves, which retain foliage through winter, rather than broad, deciduous leaves.
Option 5: palm trees. Palms are tropical or subtropical species adapted to warm climates; they do not occur in boreal forest environments, which experience very low temperatures and long winters.
In summary, boreal forests are characterized by coniferous evergreen trees as their dominant life-form, with other plant types present but not forming the main canopy. The remaining options describe vegetation more typical of other biomes or climates.

11:375:101:91 INTRO ENV SCIENCE Quiz #10

Most boreal forests are dominated by ________ .

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