The most striking difference between tropical rain forest and temperate forest is that

• A
  The tropical rain forests have a preponderance of angiosperms,while the temperate ones have a preponderance of gymnosperms.
• B
  The trees of temperate forests are taller than those of tropical rain forests.
• C
  Plants of temperate forests are comparatively more mesophytic.
• D
  Tropical forests are comparatively more homogeneous.