Q.Isinglass is used in :

Economic Zoology is the branch of Zoology dedicated to animals that carry real economic value — it studies how animals can be applied for human welfare, food security and self-employment rather than pure academic knowledge. Zoology as a whole opens onto many careers (physiology, taxonomy, embryology, wildlife management, veterinary work, museum curation), but the economic branch specifically sorts animals by the value they deliver, into four categories: animals reared for food and food products, animals that are economically beneficial in other ways (silk, honey, wax, lac and similar products), animals valued for their aesthetic or ornamental appeal, and animals used in scientific research. Since human beings have depended on domesticated animals since preh …