Plant Responses to Stimuli
Biology ⇒ Plant Biology
Plant Responses to Stimuli starts at 8 and continues till grade 12.
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See sample questions for grade 10
A plant bends toward a window where sunlight is coming in. What is this response called?
A plant's leaves fold up at night and open during the day. What type of movement is this?
A student places a potted plant on its side. After a few days, the shoot bends upward. What type of response is this?
A Venus flytrap snaps shut when an insect touches its hairs. Is this a tropic or nastic movement?
A plant bends toward a window where sunlight is coming in. What is this response called?
A plant's leaves fold up at night and open during the day. What type of movement is this?
A student places a potted plant on its side. After a few days, the shoot bends upward. What type of response is this?
A Venus flytrap snaps shut when an insect touches its hairs. Is this a tropic or nastic movement?
Which hormone is mainly responsible for fruit ripening in plants? (1) Auxin (2) Gibberellin (3) Ethylene (4) Cytokinin
Which hormone is responsible for the ripening of fruits and the dropping of leaves? (1) Auxin (2) Ethylene (3) Gibberellin (4) Cytokinin
Which of the following best describes a nastic movement? (1) Directional growth toward a stimulus (2) Non-directional movement in response to a stimulus (3) Growth away from a stimulus (4) No response to stimulus
Which of the following is a correct match? (1) Phototropism - response to gravity (2) Geotropism - response to light (3) Thigmotropism - response to touch (4) Hydrotropism - response to temperature
Fill in the blank: The growth of roots towards gravity is called __________ geotropism.
Fill in the blank: The hormone __________ is involved in the closing of stomata during water stress.
Fill in the blank: The hormone __________ is known for promoting stem elongation and seed germination.
Fill in the blank: The hormone __________ is often used commercially to promote fruit ripening.
True or False: All plant responses to stimuli involve growth.
True or False: Cytokinins are responsible for promoting cell division in plants.
True or False: Geotropism is the response of a plant to light.
True or False: Hydrotropism is more important for root growth than phototropism.
