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Which statement correctly explains directional growth of root and stem together?

Answer and explanation

Correct answer: Stem usually grows towards light and root usually grows in the direction of gravity

The governing concept is tropism, in which plant organs show directional growth in response to stimuli. Shoots commonly show positive phototropism by growing toward light, while roots commonly show positive geotropism by growing in the direction of gravity. Thus option A correctly combines the two responses. The other choices use absolute or impossible claims and incorrectly mention a spinal cord.

Related tags

RootStemTropismControl And CoordinationWorld Of LivingScienceClass 10 Mcq

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