You would predict that indoleacetic acid, a plant hormone, would have is a Auxin.
A chemical known as indoleacetic acid (IAA) is produced by plants and a few microorganisms (3, 4). IAA is important for both root and shoot growth in plants. By means of an efflux pump (PIN1-7) and a specified importer (AUX1), the hormone travels from one area of the plant to another (5, 6).
Auxin mainly help in complex mechanism of a plant , which lead many metabolic activities in plant .
What is Auxin ?
Auxin plays a crucial role in controlling plant growth and development by regulating embryonic development, root and stem tropisms, apical dominance, and the transition to blooming.
It is used to start off shoot growth in culture and encourages lateral and accidental shoot growth.
Aids in overcoming auxin-induced apical dominance.
Encourage the development of leaves' chloroplasts.
Encourages the mobilization of nutrients and delays leaf senescence.
I'd appreciate if you attached the article as well. But i'm 90% sure it's option D. A quick search reveals that it was dubbed Black Saturday due to rapid fire growth within Yellowstone park. Option D is really the only one that relates to that at all.
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The depth is remaining constant in the surface layer, so that indicates the surface layer is. well mixed. C. The salinity is fairly constant in the surface layer, so that would indicate the layer is well. mixed
