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WorksheetsPlant hormones (Auxins & Gibberlins)
Total questions: 20
Worksheet time: 10mins
What is the role of auxin that causes a plant to bend towards light?
The concentration of auxin in the plant increases when there is light.
Auxin causes uniform growth on every stem.
Auxin causes cells that are on the dark side to grow faster.
Auxin causes the increase in the number of plant cells.
Where is auxin formed
Tip of stem and root
Leaves
Embryo
All
What are the chemical messages in a plant called
Hormones
Oxygen
Parenchyma cells
Auxins are responsible for _____________ of a plant
Colour change
Watering
Phototropism
Growth
Apical dominance which suppresses lateral bud development is caused by what hormone?
auxin
gibberellin
ethylene
imbibition
Hormone that induce fruit formation without fertilization
Auxin
Gibberellins
Hormones that breaks seed dormancy and promote germination
gibberellins
Auxins
Hormone that delay senescence
Auxin
Gibberellin
both
none
Most studied form of Gibberellins
GA1
GA2
GA3
GA4
What is apical dominance
Apical buds Dominate over lateral buds
Apical buds dominate over terminal buds
Hormone that promote growth of internodes by cell elongation
Auxin
Gibberellin
Both
None
who coined the term Auxin?
F.W Went
W.F Went
Charles Darwin
Francis Darwin
The term hormone was first used by
Ernest Starling
William Bayliss
both
none
What does IAA stand for?
Indole 3-Acitic Acid
Indole 3-Acidic Acid
Indole 3-Arctic Acid
Indole 3-Acetone Acid
Which of the following is NOT a parthenocarpic fruit
Apple
Banana
Tomato
Potato
Which hormone is used in Brewing industry for malting.
Gibberelic Acid
Auxin
both
none
Hormone used for elongation of apples and Grapes
Auxins
Gibberellins
both
none
In higher plants Gibberellins are mainly distributed in
root apex
shoot apex
buds
all of them
Aixin hormone induces rooting in the cutting of plants
Rose
Bouganvilla
Both of them
none
What is parthenocarpy?
Fruits develop with the help of fertilization
Fruits develop without fertilization
