I'd been looking forward to this post dear @loveforlove and only realized you had written it after coming across your latest one: How plants grow and respond (III) in which you direct us here :) What a lovely explanation you delivered us with here. Your analogies make your topic so clear. Learning that seeds are very much like eggs has given me a whole new sense of appreciation towards them.
I found the concept of tropism quite curious too. The one tropism I thought existed was phototropism! Can you imagine? But, in my defense, that is because when I place my plants by the window they soon get positioned as if they are chasing the light to sunbathe. Well, in a sense I guess they are, right? :P
Thanks for this right up my dear.
Keep safe and strong over there <3