Excess collenchyma growth means mechanical stress. How is acknowledging stress to the plant a poor conclusion?
Normally that's what it means. However when no mechanical stress is observed then the only conclusion you can draw is that moonlight caused excess collenchyma growth.
Since the plant didn't seem damaged and wasn't visibly shaken, then it didn't have any mechanical stress thus the excess growth of Collenchyma was due to another factor.
I'm pretty confident moonlight doesn't mechanically stress plants, because last I checked, light couldn't do that.
Exactly.
So thus the only conclusion is that something else caused the excess growth of collenchyma.
Extremely unlikely since the plants were in a controlled greenhouse. They weren't even touched by anyone during the experiment.
Ummm...
I'm implying that Moonlight causes Collenchyma growth without causing mechanical stress.
And, as you said, they were never touched so how can you have mechanical stress on a plant when
a) it requires a physical impact.
b) the light had to go through glass first, which is solid.
c) there was no signs of physical movement
?
Seriously ichi, you're asking us to believe that moonlight caused plants to be hit violently as though by a raging wind yet have no physical injury and be protected by glass. Also that sunlight causes the movement to be nullified AFTER it's occurred.