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Life Under a Microscope — BIOLOGY STD 7 — Question

ICSE BoardEnglish MediumSTD 7BIOLOGYLife Under a Microscope2 Marks
Question
Give reasons:
The dough prepared for making idli rises when kept overnight.
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Answer

Dough prepared for making idli rises when kept overnight due to the action of yeast. It becomes light, fluffy and sour. Yeast multiplies and produces carbondioxide which raises the dough.

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