Solution:
The above statement is true.Wool and Silk are known as animal fibres. All animal fibres are natural fibres made from different kinds of proteins. Wool and Silk are examples of the most popular animal fibre. The animal fibre obtained from different animals usually has different properties. Wool is acquired from the fur (hair) of sheep, Angora goat, cashmere goat, yak, rabbit, camel, llama, and alpaca. Also, Silk is a fibre obtained from the cocoon of the silkworm.
