It could possibly harm other plants and if those plants become less and are a good source for animals, the animals would most likely die
The correct answer is true.
Hope that helps, even though I am late.
Answer: I think it's the third one: Letter Q points to the guard cell. Letter T points to the stomata and the response is most likely due to the humid tropical nature of the enviorment.
You would expect green around the plant see the sun around it that stuff