Plant Growth (9.3)
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Notes & Review:Topic 9 NotesKahoot Review |
Meristems
Meristems are totiopotent stem cells within the plant. These cells are told to grow and divide depending on where in the plant. Most growth occurs in the apical meristem near the tips of the plant. These can grow new leaves, new buds/ flowers, or new stems depending on what is happening.
Meristems |
Plant Hormones & Auxin
Hormones in plants were only recently discovered in the early 20th century. Plant hormones communicate with meristems influencing the type of tissues that develop. The most common group of hormones in plants are called Auxins. Auxins control anything from root and shoot growth, to flowering and fruit development, and budding.
Plant Hormones, Nutrition, and Growth The most common Auxin is IAA (Indole 3- Acetic Acid).
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Tropisms
Tropisms are responses within the plant to various external factors. The two most common are phototropism and gravitropism.
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Phototropism in depth
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Gravitropism
Micropropagation- just a fancy term for plant cloning!
Micropropagation is an in vitro (in lab/ test tube) procedure that produces large numbers of identical plants
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Micropropgation is used to
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Micropropagation- method, advantages and disadvantages
Micropropagation method explanation (Video shows how research is done in lab)- Cornell University |