Which of the following is NOT a type of tropism? Which of the following plant movements is NOT a tropism? 1. Plant stem growing toward light 2. Plant structure growing away from light 3. Plant roots growing in response to gravity 4. Vines coiling around tree trunks 5. Leaflets folding after losing turgor pressure Please help, I am stuck! Thank u :)

The answer is #5, Leaflets folding after losing turgor pressure. This refers to a phenomenon called plasmolysis.

1 - positive phototropism, incorrect

2 - negative phototropism, incorrect

3 - gravitropism, incorrect

4 - thigmotropism, incorrect