Multiple choice general knowledge science & technology Fear of trees Heliophobia Ophidiophobia Agoraphobia Dendrophobia Reveal answer Fill a bubble to check yourself D Correct answer Explanation Dendrophobia is the fear of trees. Heliophobia is fear of the sun, Ophidiophobia is fear of snakes, and Agoraphobia is fear of open or public spaces. The Greek root 'dendro-' means tree.