10 Multiple Choice Questions on Thigmotropism
1. What is thigmotropism?
Response to light
Response to touch
Response to water
Response to temperature
Correct Answer
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2. Which plant hormone is most associated with thigmotropism?
Auxin
Ethylene
Gibberellin
Cytokinin
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3. In which type of thigmotropism do plants grow toward the stimulus?
Positive
Negative
Lateral
Inverse
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4. Which part of a plant commonly exhibits thigmotropism?
Leaves
Tendrils
Roots
Flowers
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5. What is the primary function of thigmotropism in climbing plants?
Protection from animals
Maximizing sunlight exposure
Preventing water loss
Absorbing nutrients
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6. What does the word ‘thigmotropism’ mean in Greek?
Growth and response
Movement and light
Touch and turn
Light and water
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7. What type of thigmotropism is seen in roots avoiding obstacles?
Positive
Negative
Neutral
Spiral
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8. Which of these plants is known for displaying thigmotropism?
Rose
Oak tree
Grapevine
Sunflower
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9. The rapid folding of Mimosa pudica’s leaves when touched is an example of:
Phototropism
Thigmonasty
Hydrotropism
Thermotropism
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10. What triggers thigmotropism in plant cells?
Chemical responses only
Redistribution of auxins
Water loss
Leaf movement
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