Crown gall disease enhances ________________.

Meristematic activity

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Development of chloroplasts

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Reduction in leaf size

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Alteration in the morphology of flowers

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Solution

The correct option is A Meristematic activity
Crown gall is a common disease of many woody shrubs and some herbaceous plant. It is caused by the bacterium Agrobacterium tumefaciens. It is especially common in the rose family. It increases meristematic activity in plants which result in the adulting of bodies of vascular plants.
So, correct answer is (A)

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