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To obtain virus-free healthy plants from a diseased one by tissue culture technique, which part/parts of the diseased plant will be taken:

1. Apical meristem only
2. Palisade parenchyma
3. Both apical and axillary meristems
4. Epidermis only

Correct answer: Both apical and axillary meristems

Solution

Viruses often fail to invade or multiply in rapidly dividing meristematic regions, so culturing these parts can regenerate healthy plants. Both apical and axillary meristems are used because they are the best sources for virus-free plantlets.

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