Vines in tropical rain forests must grow toward large trees before being able to climb toward the sun. Which of the following responses would promote vine growth towards a tree?
A) negative thigmotropism
B) negative phototropism
C) positive gravitropism
D) positive phototropism

Question

Quizplus · Accepted Answer

Negative phototropism means that the plant grows away from light, which would encourage it to grow towards the darker area under the canopy where trees are located, thus promoting growth towards a tree.

Vines in Tropical Rain Forests Must Grow Toward Large Trees