GMAT
When a caterpillar emerges from the egg on a tree branch, it immediately climbs upward until it finds a leaf bud to eat. Biologists thought that this behavior displayed an innate tendency to move in the direction opposite to the pull of gravity. In a recent experiment, a strong light source was placed at the bottom of a tree, and caterpillars, after hatching, climbed downward.Which of the following hypotheses is best supported by the statements given?
【选项】Newly hatched caterpillars move toward the leaf bud nearest to them.
题目基本信息