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Plant Hormones MCQs
Which of these functions is controlled by hormones?
ripening of fruit
the growth of shoots upward and roots downward
the growth of plants toward the light
the dropping of leaves in the fall
All of these
All of these
_ stimulate the elongation of cells in the plant stem and phototropism
Auxins
Abscisic acid
Cytokinins
Gibberellins
Auxins
_ promote both cell division and cell elongation
Auxins
Abscisic acid
Cytokinins
Gibberellins
Gibberellins
_ Causes shoots to elongate so plants can grow taller and leaves can grow bigger
Auxins
Gibberellins
Abscisic acid
Cytokinins
Gibberellins
_ signal buds and seeds to begin growing in the spring
Auxins
Gibberellins
Abscisic acid
Cytokinins
Gibberellins
_ stimulate cell division, promote leaf expansion, and slow down the aging of leaves
Auxins
Gibberellins
Abscisic acid
Cytokinins
Cytokinins
Function of cytokinins is _
stimulate cell division
promote leaf expansion
slow down the aging of leaves
All of these
All of these
_ inhibits cell growth and can help prevent water loss by triggering stomates to close
Auxins
Gibberellins
Abscisic acid
Cytokinins
Abscisic acid
Plant nurseries use _ to keep plants dormant during shipping
Auxins
Gibberellins
Abscisic acid
Cytokinins
_ stimulates the ripening of fruit and signals deciduous trees to drop their leaves in the fall
Auxins
ethylene
Gibberellins
Abscisic acid
ethylene
Fruit growers use _ to partially ripen fruit for sale
Auxins
ethylene
Gibberellins
Abscisic acid
ethylene
Florists actually use _ to help make cut flowers last longer
Cytokinins
ethylene
Gibberellins
Abscisic acid
Cytokinins