Explants before organogenesis are:

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(D) An explant is the excised piece of tissue or organ used for plant tissue culture.Before organogenesis occurs,the explant cannot synthesize its own

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Heterotrophic

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(D) An explant is the excised piece of tissue or organ used for plant tissue culture.Before organogenesis occurs,the explant cannot synthesize its own food through photosynthesis as it lacks fully developed photosynthetic machinery and is typically grown in a closed vessel on a synthetic medium.Therefore,it relies on external nutrients,primarily sucrose,provided in the culture medium,making it heterotrophic.

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