Crossword clues for the word: TROPISM The word TROPISM has appeared as an answer to at least 5 crossword clues on different crossword puzzles. Crossword clues for TROPISM Showing 1 to 5 of 5 results Clue(s) "Turning towards the sun, e.g." Involuntary response Plant tendency to grow toward light Plant's movement Why plants turn to the sun