A) Fibroin is the gummy substance that holds the two strands of sericin of a silk fibre together.
B) Asbestos is the only naturally occurring long mineral fibre.
C) Merino is an exotic breed of sheep.
D) Hair present on body of wool-yielding animals trap a lot of air.
Correct Answer: A
Solution :
Sericin is the gummy substance that holds the two strands of fibroin of a silk fibre; together.
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