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    Plant Growth and Development
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    Which has highest concentration of auxins?
    Coleoptile tips have highest concentration of auxins as compared to other parts.
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    Is swelling of wood when placed in water a growth ?

    No, because it occurs by imbibition of water which is addition of water from outside.
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    What initiates germination of seed in peanut and sprouting of potato tubers ?
    Ethylene initiates germination in peanut seeds, sprouting of potato tubers.
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    Which hormone initiates flowering in pineapples and mangoes ?
    Ethylene is used to initiate flowering and for synchronising fruit-set in pineapples. It also induces flowering in mangoes.
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    Where ethylene is synthesised ?
    Ethylene is synthesised in large amounts by tissues undergoing senescence and ripening fruits.
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