If the agar block in B was placed in the center of coleoptile (not sideways) what would have been the result?

Grow straight up or symmetrical growth

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Grow downwards

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Both (A) and (B)

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None of the above

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Solution

The correct option is A Grow straight up or symmetrical growth
If B was placed in the middle of coleoptile, it will result in the growth of plant apex. The plant exhibit apical dominance if auxin is present. The multiplication of meristematic cells closer to the apex, results in the increase of plant height.
So, the correct answer is 'Grow straight up or symmetrical growth'

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