PLANT PHYSIOLOGY
PLANT MOVEMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Putri is observing the types of movement in plants. The plants that Putri observed were the leaves of the Oxalis plant and crocus flowers. The leaves of the Oxalis plant have a unique movement, which can open during the day and close at night. Meanwhile, crocus flowers can open when environmental conditions are warm and close when environmental conditions are cold. The correct conclusion based on Putri’s observations is ____
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the leaves of the Oxalis plant include the tropism movements, while the opening and closing of the crocus flowers include complex nasti movements
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the leaves of the Oxalis plant are affected by temperature stimulation, while the movement of crocus flowers is influenced by sunlight stimulation
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Oxalis plant leaves and crocus flowers enter into a tropism movement
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Oxalis plant leaves and crocus flowers enter the nasti movement
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Explanation:
Detailed explanation-1: -The non-directional movement of a plant part, usually the petals of flowers, in response to light is called photonastic movement. For example, leaves of Oxalis triangularis open in bright light and droop in dim light.
Detailed explanation-2: -There are 6 known types of tropic movement observed in plants. They are: Phototropism, Gravitropism, Chemotropism, Thigmotropism, Thermotropism and Hydrotropism.
Detailed explanation-3: -Plants show gradual movement in response to various external stimuli. They are called tropic movements or nastic movements.
Detailed explanation-4: -Example of movement in plants: A sunflower turns its face towards the sun due to phototropism.
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