Life scientists have discovered 1) ___________ of leaf design that enable plants of different sizes to grow leaves of different shape and size. Using allometric analysis, the team from 2) _____________ looked at how the proportions of parts and differences in total size applied to the interior of leaves.
The biologists focused on 3) __________ in leaves of different sizes, and examined plant species from around the world, all grown on the UCLA campus. They said that 4) __________ the differences in leaf surface area among species was easy, but the study of differences in leaf thickness was less obvious but equally important.