உருளைக்கிழங்கில் கிழங்கு உருவாக
__________ நேரம் அவசியம்.
(அ) நீண்ட பகல்
(ஆ) நீண்ட இரவு
(இ) குறைந்த பகல்
(ஈ) குறைந்த இரவு
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★ __________ time is necessary for the formation of tubers in potatoes.
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★ Tubers are enlarged structures in some plant species used as storage organs for nutrients. ★ They are used for the plant's perennation (survival of the winter or dry months), to provide energy and nutrients for regrowth during the next growing season, and as a means of asexual reproduction.
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