[Campbell Biology P.700] Beyond food and medicine, seed plants are critically important for ... | Practice Question

Beyond food and medicine, seed plants are critically important for human welfare in which of the following ways, as described in the text?

  • A: They are the primary source of all naturally occurring fibers for textiles.
  • B: They are the primary source of wood, widely used for fuel, paper, and construction.
  • C: They provide the only known examples of artificial selection for crop improvement.
  • D: They are the sole producers of oxygen on Earth.

Explanation

The "Products from Seed Plants" section states: "Many seed plants are sources of wood... Wood consists of tough-walled xylem cells... It is the primary source of fuel for much of the world, and wood pulp, typically derived from conifers such as fir and pine, is used to make paper. Wood remains the most widely used construction material."