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WorksheetsLET ME GROW (TOPIC:PLANT HORMONE)
Total questions: 14
Worksheet time: 18mins
Diagram shows the shoot of a plant grow towards light.
What is the cause of the reaction ?
The shoot needs to grow longer to avoid competition for light
The shoot needs light for photosynthesis
The cells shaded from light elongate faster
The concentration of auxins is higher in cells exposed to light
Diagram shows a method of producing fruit by auxin hormone.
What is the characteristic of fruit formed ?
The fruit is bigger
The fruit has no seed
The fruit is sweeter
The fruit has more vitamin C
Why does a farmer place a few unripe fruits together with ripe fruits ?
This can make the unripe fruits sweeter and juicer
This can quicken the ripening of the unripe fruits
This can make the colour of ripe fruits more attractive
This can make the ripe fruits keep longer
Diagram shows 4 coleoptiles which are exposed to light from one side.
Which of the coleoptiles P, Q, R and S respond to the direction of light ?
P AND R
Q AND R
P AND Q
Q AND S
Diagram shows a traditional practice to speed up the ripening of fruits.
What is the purpose of keeping the fruits in the rice container?
To trap heat
To trap ethylene
To trap carbon dioxide
To trap water in the fruit
Diagram shows a graph, which shows the effect of the concentration of auxin on the growth of the shoot tip and the root tip.
What is the effect on the growth of cells in the shoot tip and in the root tip if the concentration of auxin is I p.p.m?
SHOOT TIPS : Stimulate the growth of cells,
ROOT TIPS:Inhibits the growth of cells
SHOOT TIPS:Inhibits the growth of cells,
ROOT TIPS:Stimulates the growth of cells
SHOOT TIPS:Stimulates the growth of cells
ROOT TIPS:Stimulates the growth of cells
SHOOT TIPS:Inhibits the growth of cells
ROOT TIPS:Inhibits the growth of cells
Which of the following plant hormones stimulate parthenocarpy process?
Ethylene
Cytokinine
Auxin
Response to light in which plant stems bend toward a light source
gravitropism
negative gravitropism
phototropism
negative phototropism
When the plant grows toward the stimuli
Positive
Negative
When the plant responds to gravtiy
Phototropism
Thigmotropism
Gravitropism
Hydrotropism
Hormone related to the growth of the plant in response to tropisms
Auxin
Ethylene
Cytokinins
Absisic acid
Hormone that breaks seed dormancy and promotes growth (can make fruit bigger)
Auxin
Gibberellin
Ethylene
Cytokinins
The meristem cells at the tip of the shoot produces...
gibberelin
auxin
What can we explain on the blue shaded colour of a germinating seed ?
High concentration of auxins of upper side of ROOTS INHIBITS growth
High concentration of auxins of lower side of ROOTS INHIBITS growth
High concentration of auxins of lower side of SHOOTS INHIBITS growth
