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BIOA01H3 (699)
Lecture

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Department
Biological Sciences
Course
BIOA01H3
Professor
Mark Fitzpatrick
Semester
Winter

Description
Hormones: a chemical manufactured by specialized tissues on one part of the body that affects another part of the body. -Targets tissues with these hormones specialized for each type of external factors -Based on external factors, each hormone is triggered Growth Promoter Hormones Auxins: controls the elongation of cells -Key for phototrophism -When there is light, the cells on the opposite side will start to elongate, pushing the plant towards the light source -Auxins will inhibit root elongation -Auxins help mature the plant -Commercial Use: promote root growth, prevents ripening of fruits, and seedless fruits Gibberellins: works with auxins -Make cells wider -Made in apical meristems and chloroplasts -Fruit, flower, and leaf development -Commercial Uses: sprayed onto grapes to make them seedless, hence they’re wider Cytokinins: made in roots -does cell division and allows cell specialization -Commercial uses: sprayed on flowers to keep
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