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This isn't a flower, but the cluster of shiny berries containing the seeds of a flower. My best guess is that it is a Jack-in-the-Pulpit (Arisaema triphyllum), but it's a bit hard to tell from the two leaves, which are both decomposing and at a bad angle to tell for sure. But it's definitely in the Arum family.
Their range includes Eastern US and Ontario.
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The curving of stems towards light sources is called phototropism.
It is a hormonal phenomena that responds to light. Just like human beings, plants have hormones in them.
The hormone that makes plant respond to light is auxin. It is a type of growth hormone, causing growth in the parts where it accumulates, and it does so in regions away from light. So, ...
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It's a slightly tough question that can't be answered with a simple "they share X characteristic in common". It's more that some of them share a characteristic, and some of those share a characteristic with another load of species within the same sub-clade, and some of the characteristics they have are shared with some more... etc.
The American ...
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Apart from what's written in the article, stomata typically close at night as there's no sunlight so no photosynthesis. Respiration however continues 24/7 but the rates vary. During the night, the rate of respiration drops since stomata are closed. But it never drops to 0. Respiration still happens as oxygen exchange can still be done through the following ...
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