Trends in Economic Zoology — Bio Zoology STD 11 — Question
Tamilnadu BoardEnglish MediumSTD 11Bio ZoologyTrends in Economic Zoology3 Marks
Question
Give notes on Quality for pearls?
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Answer
→ The pearls obtained are of variable shapes and sizes. → They may be white or cream red or pink-red in colour. → The spherical pearls of rainbow colour are rarely found. → Pearl obtained from freshwater bivalves is not as valuable as those obtained from marine oysters.
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