Plant Hormones
Biology ⇒ Plant Biology
Plant Hormones starts at 9 and continues till grade 12.
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See sample questions for grade 11
A scientist applies a high concentration of auxin to the lower side of a horizontally placed stem. What is the expected response?
Describe how auxins cause phototropism in plants.
Describe the effect of gibberellins on dwarf and tall pea plants.
Describe the role of abscisic acid in seed dormancy.
Describe the role of ethylene in fruit ripening.
Explain how abscisic acid helps plants survive drought conditions.
Explain the antagonistic relationship between auxins and cytokinins in plant tissue culture.
Explain the concept of apical dominance and the role of auxins in it.
Explain why auxins are used as rooting hormones in plant propagation.
Name two functions of gibberellins in plants.
Which hormone is mainly involved in the closing of stomata during water stress?
Which hormone is responsible for bolting in plants like cabbage?
Which hormone is responsible for the triple response in seedlings (inhibition of stem elongation, stem thickening, and horizontal growth)?
Which hormone is used commercially to promote fruit ripening?
