Questions about auxins:
Why do auxins move to the shaded region after being produced?
- to promote elongation of cells
- this allows for bending of the coleoptile towards light
If a coleoptile is cut from a plant and placed on an agar plate, how is auxin still able to diffuse (does it travel by diffusion?) onto the plate? How would meristem cells still be able to produce auxins, considering its vascular system, function, etc is "destroyed"?
Is there an advantage of coleoptiles bending towards light?
You don't need to know this level of detail for VCE bio. The only study design dot relating to auxin is:
• the sources and mode of transmission of various signalling molecules to their target cell, including plant and
animal hormones, neurotransmitters, cytokines and pheromones
From that I would say you just need to know where they are created and how they move. I don't know if you even need to know about specific plant hormones - you definitely don't need to know about specific neurotransmitters and they are listed equally. I would learn their general function though as most teachers seem to be teaching at least that much.
I don't know if your teachers are just teaching you too much detail or if you are learning this on your own but definitely don't worry about it, it will not be on the exam.
Also if you know that the question you're asking is not VCE relevant, please write that so that other people don't freak out. If you don't know whether its relevant I'll tell you so don't worry about it.
Edit: @darkdzn Definitely interesting and feel free to talk about it, I just didn't want anyone else to read this and think that they had to know all of it.